Tag Archives: Fasteners

The Tanner National Distribution Network – Getting You Products Faster!

Tanner Partners with its Largest Suppliers to Improve Nationwide Distribution

Having the ability to provide our customers with high-quality fasteners & anchors at competitive pricing is only part of our goal. The second part of our goal is to be able to get you your fasteners & anchors faster than ever. This is why we have partnered with some of our largest suppliers to improve our shipping speeds.

Strength in Numbers

Partnering with our largest supplies has allowed us to often get you your order faster than ever! Due to these partnerships, we can often, in some cases, get you your products referencing a 3-5 day turnaround, just as fast as in-stock products.

Looking at Product with a 3-5 Day Turn Around?

Worried you won’t get your products in time? Have no fear, we are here to help and can be reached via chat or by phone. Please feel free to open a chat (icon lower right) or call 1-877-810-1514 to discuss product availability utilizing our nationwide supplier network.

Product Distribution Centers by Product

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map_TannerDistributionSteel

 

 

Thin Material Fastening & Blind Fastening Solutions in 1

Threaded Rivet Nuts Solve Thin Material & Blind Fastening Problems

When looking for fastening solutions for applications in thin materials where there is access from only one side of the working material, also known as a “blind” application, threaded rivet nuts can be the fasteners you are looking for. Threaded rivet nuts, also called blind threaded rivets, blind rivet nuts and threaded inserts, have the ability to provide permanent load-bearing threads in thin materials. Rivet nuts are ideal for tubing, extrusion, and similar applications.

  • Made from aluminum, brass, steel or stainless steelThread-Rivet-Nut-Group
  • Use in place of tapped holes, weld nuts, rivets, self-drilling & tapping screws
  • Only need access from “front” side of the workpiece
  • Provide strong permanent metal threads in metal or plastic materials
  • Can be installed in materials as thin as 0.020″ / 0.50mm
  • Help promote thinner and lighter product designs

Threaded Rivet Nut Classifications

Threaded rivets nuts can be classified into two basic groups – Standard Thread Rivet Nuts & Heavy-Duty Threaded Rivet Nuts

Standard Rivet Nuts: Are designed for most standard blind fastening applications that require permanently installed threads.

  • Available in unified and metric thread sizes #6-32 to 1/2″-16 and M4 thru M10

Heavy-Duty Rivet Nuts: Are designed for more demanding, high-performance blind fastening applications that require permanently installed threads. Heavy-duty rivet nuts feature heavy-duty head and sidewalls.

  • Available in unified and metric thread sizes #4-40 to 1/2″-13 and M3 thru M12

How to Set a Threaded Rivet Nut

Threaded-Rivet-Nut-Setting

Tanner Has the Rivet Nuts for Your Next Job

Choosing threaded rivets nuts can help save you time and money by eliminating additional hardware, resulting in fewer parts and fewer assembly steps. At Tanner, we can help you save even more by shopping online from our wide selection of threaded rivet nuts for any application you may encounter.Thread-Rivet-Nut-Cut-View

New Rivets, Rivet Nuts & Installation Tools Available Now

Quality Fastening Solutions the First Time, Every Time

Tanner is happy to announce our launch of a new line of Rivets, Rivet Nuts & Rivet Installation Tools. Our new blind rivet line includes a wide variety of blind rivet styles designed for the most popular riveting applications. In addition to the wide variety of blind rivets, our new rivet nuts & inserts also come in the most popular styles and sizes. Finally, to be sure your riveting applications are all properly installed, you will want to check out one of our manual or powered riveting tools. These high-quality riveting tools are ergonomically designed to help make your job easier than ever.

New Blind Rivet Lines

Blind rivets are designed for fastening materials together when you only have access to one side of the part or structure. Important factors you need to take into consideration when choosing the rivet for your next job include: grip range, shear strength & tensile strength.

  • Grip Range: the minimum and maximum thickness that the rivet is intended to hold together once installed.
  • Shear Strength: the maximum load that can typically be applied to the rivet that can be supported prior to failure and fracture.
  • Tensile Strength: the maximum tension applied load that can typically be applied to the rivet prior to failure and fracture.

Standard Blind Rivets

Multi-Grip Blind Rivets

Semi-Structural Blind Rivetsimage_Rivets

Structural Blind Rivets

Load Spreading Blind Rivets

Specialty Blind Rivets

What are Hex Cap Screws?

hex-cap-screws-group

Hex Cap Screws are fasteners featuring a hexagonal, six-sided, head with a washer face on the bearing surface and a chamfered point. Commonly used in construction and machine assemblies, hex cap screws are one of the most common fasteners used on the jobsite today. Specifications for hex cap screws are described under the ASME B18.2.1-1996 standard. Hex cap screw specifications include ASTM A449 & SAE J429: Grade 2, Grade 5 & Grade 8.

Hex Cap Screws are NOT Hex Boltshex-cap-screws

Mistaking a hex cap screw for a hex bolt is a very common occurrence, but the two fasteners differ in many ways, including the way they are used and installed.

  • Hex bolts are installed by turning a nut to tighten the fastener
  • Hex cap screws are installed into tapped holes by turning the head to assemble and tighten
  • Hex cap screws feature a washer face on the bearing surface and the chamfered point
  • Hex bolts have neither the washer face or chamfered point
  • Hex cap screws are commonly used for precision applications where a tight tolerance is required
  • Hex bolts are often used in the construction industry where the mechanical properties are more important than dimensional tolerances

Grades of Hex Cap Screws

Grade 2 Hex Cap Screwshex-cap-screws3

  • Often referred to as “hardware” quality, these fasteners are typically made of low carbon steel
  • Grade 2 fasteners are ideally suited for holding wood pieces together (in combination with appropriate nuts and washers) or general hardware use where higher strength is not required
  • There is no grade marking on the head of Grade 2 fasteners
  • Many manufacturers will put a distinguishing company identification on the head

Grade 5 Hex Cap Screws

  • Tempered Grade 5 fasteners are made of medium carbon steel
  • Grade 5 fasteners are quenched and tempered for the additional strength necessary for most automotive uses and other applications where strength is a moderate concern
  • The grade marking on the head of a Grade 5 fastener is three equally-spaced lines coming out from the center of the head
  • Manufacturers’ identifications are added for traceability

Grade 8 Hex Cap Screwshex-cap-screws7

  • Tempered Grade 8 fasteners are manufactured of medium carbon alloy steel for the most demanding applications
  • Grade 8 fasteners are then quenched and tempered to superior strength and hardness qualities
  • The grade marking on a Grade 8 fastener is six equally-spaced lines coming out from the center of the head
  • Manufacturers’ identifications are added for traceability

18-8 Stainless Steel Hex Cap Screws

  • The most popular type of stainless used in the production of fasteners
  • The composition is approximately 18% chromium and 8% nickel, thus the name 18-8
  • 18-8 stainless steel consists of several grades of stainless in this classification including 302, 303, 304 and 305
  • All of these grades of 18-8 stainless steel have good strength and corrosion resistance

316 Stainless Steel Hex Cap Screwshex-cap-screws6

  • 316 stainless steel is more corrosion resistant than 18-8, but also more expensive
  • 316 stainless steel is composed of approximately 18% chromium and 12% nickel with the addition of 2% to 4% molybdenum
  • 316 stainless steel also maintains its strength at higher temperatures than 18-8

410 Stainless Steel Hex Cap Screws

  • 410 stainless steel has approximately 12% chromium with no nickel
  • 410 stainless steel is not very corrosion resistant and is magnetic, but it can be heat-treated to become harder

Additional Hex Cap Screw Technical Specification Data Available

For a more in-depth look at hex cap screws, please visit our Hex Cap Screw Technical Specification Data page.

New USA Made Self-Drilling Screws Now Available

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Avoid the Tariffs, Shop High-Quality USA Made Self-Drilling Screws

With the recent rise in tariffs, there is no better time than now to buy American made fasteners. Melted & poured in the USA, this new lineup of self-drilling screws is American through and through. Manufactured under the ISO 9001:2015 standards to be sure we consistently provide high-quality drill screws every time. These self-drilling screws are fully compliant to the Fastener Quality Act, maintaining complete lot control and traceability.

American Made Self-Drilling Screwslogo_MadeUSA

American made self-drilling screws are a staple of any construction drill screw program. Featuring TanCor Corrosion Resistant Coating, which provides 1,000 hours of salt spray protection. These self-drilling screws are heat-treated in strict accordance with SAE J78 industry standard. It is NOT recommended to use these drill screws in critical applications where dissimilar metals (aluminum) and exposure to moisture are involved. Available in a few different options:

Read on to learn more about each line of American Made Self-Drilling Screws.

New American Made Self-Drilling Screw Lineup

Standard Self-Drilling Screwbox_StandardSelfDrillingScrews_06

  • Staples of any construction job site
  • Option in with Zinc Plating (#10-16 x 3/4″)
  • All others feature TanCor Corrosion Resistant Coating
  • Provides 1000 hours of salt spray protection
  • #10, #12 & 1/4″ diameters
  • 3/4″ – 6″ lengths
  • Made in the USA

Standard Self-Drilling Screws with Bonded Sealing Washersbox_StandardSelfDrillingScrewsBW_06

  • Applications requiring a weather-tight seal
  • Galvanized bonded sealing washers
  • Option in with Zinc Plating (#10-16 x 3/4″)
  • All others feature TanCor Corrosion Resistant Coating
  • Provides 1000 hours of salt spray protection
  • #10, #12 & 1/4″ diameters
  • 3/4″ – 4″ lengths
  • Made in the USA

Heavy Duty Drilling Self-Drilling Screwsbox_HeavyDrillSelfDrillingScrews_06

  • Thick metal applications
  • For steel up to 1/2″ thick
  • Feature TanCor Corrosion Resistant Coating
  • Provides 1000 hours of salt spray protection
  • #4, #4.5 & #5 point sizes
  • #12 & 1/4″ diameters
  • 7/8″ – 6″ lengths
  • Made in the USA

Heavy Duty Drilling Self-Drilling Screws with Bonded Sealing Washersbox_HeavyDrillSelfDrillingScrewsBW_06

  • Thick metal applications (1/2″ thick steel)
  • Applications requiring a weather-tight seal
  • Galvanized Bonded Sealing Washer
  • Feature TanCor Corrosion Resistant Coating
  • Provides 1000 hours of salt spray protection
  • #4, #4.5 & #5 point sizes
  • #12 & 1/4″ diameters
  • 7/8″ – 3″ lengths
  • Made in the USA

Coarse vs Fine Thread – What Thread Type Do I Need?

Screw Threads

Fastener Thread Styles

Have you ever been stuck trying to figure out when to use a coarse thread vs fine thread fastener? Don’t worry you aren’t alone. Most people would be surprised to learn about the significant characteristic differences between the two. Each type of threading has its own benefits that the other style lacks.  Read on to learn more about coarse vs fine thread fasteners and never choose the wrong thread type again.

  • Screw threading is a uniform ridge that is wrapped around a cylinder (straight thread) or cone (tapered thread) in the form of a helix
  • Screw threads vary in height and width, from fastener type to fastener type
  • Threads set with “wide & deep ridges” are considered a coarse thread
  • Threads set with “more narrow & shallow ridges” are considered a fine thread

What’s the Difference Between Coarse & Fine Threadsscrew threads

Coarse threaded fasteners are a great choice for most construction applications. One reason is that coarse threaded fasteners can be “roughed up” on the job site and still have the ability to work properly.  “Roughed up” meaning, their threads can be lightly damaged or the presence of dirt and other obstructions can be in the threads, the same “roughing up” could render some fine threaded fasteners useless. Coarse threaded fasteners are also more difficult to strip or cross-thread because of the wider thread style, allowing for more material between the threads.

Fine threaded fasteners are a much better choice when specific measurements are required. Fine threads feature a higher tensile strength, making them ideal for strength applications. The shallow pitch (helical angle) of fine threads makes them much less susceptible to loosening from vibration. With less material to cut to form threads, the process of tapping holes for fine threaded fasteners is much easier.

Read on to compare the features and benefits of coarse and fine threaded fasteners side by side.

Coarse vs. Fine Thread Comparison

Coarse Threads

Fine Threads

  • Stripping strengths are greater for the same length of engagement.
  • Less likely to cross-thread.
  • Quicker assembly and disassembly.
  • Tap better in a brittle material.
  • Larger thread allowances accommodate thicker plating, coatings and are therefore less likely to seize in corrosion-prone applications.
  • Less prone to stripping when fastened into lower strength materials.
  • Better fatigue resistance because of less concentration to stress at thread root radius.
  • The height of each thread is greater than the corresponding fine thread so there is more material between each thread-making flank engagement greater.
  • Less susceptible to being nicked or damaged, so they do not have to be “handled with care” as much as fine threads.
  • Coarse threads are much less likely to experience thread galling than fine threads.
  • Aerospace applications generally use coarse threads on sized 8–32 and smaller.
  • Coarse threads are used when threaded into aluminum or cast iron because the finer threads tend to strip more easily in these materials.
  • Are stronger when assembled with lower strength nut or tapped hole materials.
  • Stronger for bolt/screw/nut sizes over one inch.
  • They start more easily than fine thread, particularly in awkward positions and require less time to tighten.

 

 

 

  • Are stronger in tapped hole materials normally used in the design and significantly increase joint clamping force.
  • Allow for greater adjustment accuracy because of their smaller helix angle. Can be threaded closer to the head since thread die chamfer is a function of pitch.
  • Are better for tapping thin-walled members because tapping torque is lower for short engagement lengths.
  • Are stronger for fastener sizes one inch diameter and smaller, gaining strength advantage as size decreases.
  • Maintains joint tightness and clamping force better due to the smaller helix angle of the thread.
  • Aerospace applications generally use fine thread fasteners due to their increased strength.
  • Stronger than the corresponding coarse threaded bolts of the same hardness.
  • Stronger in both tension and shear due to having a slightly larger tensile stress area and minor diameter.
  • They have less of a tendency to loosen under vibration due to their having a smaller helix angle than coarse threads.
  • Shorter thread depth allows for threading in thin wall applications.
  • Where the length of engagement is limited, fine threads provide greater strength.
  • Their larger minor diameters develop higher torsional and transverse shear lengths.
  • Fine threads require less torque to develop equivalent bolt preloads.
  • Fine threads are more susceptible to thread galling than coarse threads.
  • Fine threads need longer thread engagements and are more prone to damage (nicking) and thread fouling.
  • They are less suitable for high-speed assembly since they are more likely to seize when being tightened.

Marine Grade 316 (A4) Stainless Steel Bi-Metal Self-Drilling Screws

EJOT® SUPER-SAPHIR JT6 Self-Drilling Screws

EJOT® SUPER-SAPHIR JT6 self-drilling screws are made from Marine Grade 316 Stainless Steel Bi-Metal. They feature a screw head and threads that are made of 316 stainless steel, providing exceptional corrosion protection and superior ductility. SUPER-SAPHIR JT6 self-drilling screws have a classic drill point and are designed to drill, form the thread and fasten components in one work step. The drill point is made of hardened carbon steel that is welded to the body. This allows JT6 fasteners to drill and tap steel up to 1/2 thick.  EJOT® SUPER-SAPHIR JT6 self-drilling screws are completed by an optional pre-assembled sealing washer.

EJOT® SUPER-SAPHIR Self-Drilling Screws Features

  • High-quality grade 316 stainless steel, ISO group A4, DIN 1.4401
  • High-quality case hardened carbon steel drill point to DIN standard 10666
  • Available with pre-assembled stainless steel EPDM vulcanized sealing washer for a safe seal every time
  • Free spin zone (near the head of the screw) for a reliable positive connection (only side lap screws)
  • Drill point with small dead center prevents misalignment on the component surface

EJOT_SuperSaphirScrewDiagramSUPER-SAPHIR JT6 Self-Drilling Screws

 

New Product Release – *Only Available at Tanner*

Proper Selection of SUPER-SAPHIR JT6 Self-Drilling Screws

To properly select your SUPER-SAPHIR JT6 Self-Drilling Screws, you must take into account the clamping thickness and required drilling performance.EJOT_ClampThicknessDiagram

Clamp Thickness

To calculate the clamp thickness, you take the thickness of the attachment (a) PLUS (+) the strength of the substructure.

The following formula can be used: Clamp Thickness Greater than or Equal to (a) + 6mm.

Drilling PerformanceEJOT_DrillingPerformanceDiagram

The drilling performance is calculated from the thickness of the components to be drilled.

The following formula can be used for Direct Bearing Surface (trapezoidal profile to steel substructure): t = component (tI) + component (tII).

The following formula can be used for Sandwich Panels: t = component (tII).

Get Increased Reliability with Sealing Washers

EJOT recommends using the sealing washers with SUPER-SAPHIR JT6 Self-Drilling Screws that are used in unweathered areas. The risk of damaging the screw joint with improper installation (excessive tightening torque, slightly sloped clamping) is significantly reduced when sealing washers are used. Clamp load and tensile stress, are also limited in the screw when using the sealing washers. The sealing washer will also help eliminate a direct exposure of the joint (protective surface coating damaged by the fastening process) – significantly dropping the risk of operational, hydrogen-induced embrittlement failure.

EJOT_SealingWasherInstallationDiagram

Correctly Install JT6 Self-Drilling Screws with Sealing Washers

When installing SUPER-SAPHIR JT6 Stainless Steel Self-Drilling Screw with Sealing Washers, depth control must be used. Adjustable depth control will prevent the deformation of the sealing washer (washer with elastomer seal). If the sealing washer is properly installed, you may see the rubber seal overlap. But if the metal back of the sealing washer changes from convex to concave, the screw was installed too tight.

slider_EJOTMarineGrade316Screws
EJOT Marine Grade 316 Stainless Steel Bi-Metal Self-Drilling Screws Available Now at Tanner

Corrosion Resistant Construction Fasteners from Elco

Featuring High-Performance Stalgard® Corrosion Resistant Coatings

To meet the needs of the wide range of concrete & masonry applications in corrosive environments, Elco Construction Products has developed Stalgard®, a specialized corrosion resistant coating. Specifically designed for critical fastening applications in concrete & masonry in exposed environments, don’t take any chances, choose Elco fasteners with Stalgard® corrosion resistant coating.

What is Stalgard® CoatingStalgardScrewCircleRoHSLogo

Stalgard® corrosion resistant coatings are durable, multi-layer, coatings that are engineered to provide optimal performance in the most demanding construction applications. These environmentally friendly finishes are free from chromates & silicates and any process, like electroplating, that might induce hydrogen embrittlement & structural failures.

  • Maximizes fastener performance
  • Salt spray corrosion resistance at 1000+ hours with no red rust per ASTM B117
  • Uniform thickness
  • Low coefficient of friction – eliminates the need for post-coating lubricants to ease installation
  • Does not use processes that introduce hydrogen – will not cause brittle failures like those caused by electroplating
  • Durable tough finish – doesn’t come off during handling or repeated installations
  • Eliminates the plating process, resulting in a more environmentally friendly product than those with plated zinc or other finishes
  • RoHS Compliant – chrome-free
  • Clean and dry – no oily residue
  • Maintains drilling and tapping performance
  • Blue, grey, and white Stalgard are ACQ-compatible

What are the Different Types of Stalgard® Corrosion Resistant Coatings

Stalgard®StalgardLogos

  • For Induction Heat-Treated Fasteners
  • Proven, outstanding corrosion resistance for most construction applications, including metal and wood
  • Salt spray resistance: 1000 hours per ASTM B117, 1600 hours over 410 stainless steel
  • Available colors: silver, black, blue, white, yellow, red, gray and brown
  • Pantone gray available for ACQ-treated lumber
  • Maintains drilling and tapping performance

Stalgard® GB

  • Galvanic Barrier Coating
  • Standard on all Elco stainless steel fasteners
  • Prevents a galvanic reaction between the stainless steel and dissimilar application materials, which could lead to fastener and/or joint failure
  • Salt spray corrosion resistance: 1000 hours per ASTM B117
  • Available color: Silver
  • Maintains drilling and tapping performance

Stalgard® SUB

  • Ultimate Barrier Coating
  • For more severely-corrosive environments
  • Salt spray 2,000 hours per ASTM B117
  • Available color: Silver
  • Maintains drilling and tapping performance

Construction Fasteners Featuring Stalgard® Corrosion Resistant Coatings at Tanner

For Metal ApplicationsStalgardScrews

For Aluminum Applications

For Concrete Applications

Self-Drilling Screws – How They Work

Self-Drilling Screws eliminate the need for separate drilling and tapping operations, helping provide the user with a faster, more economical installation process. Self-Drilling Screws operate on the same basic principles as a drill bit or other cutting tool. Performance for these screws are determined by cutting speed, feed rate, depth of cut and the working material being drilled into.

Optimal Performance Conditions for Self-Drilling ScrewsOptimalCuttingConditionsScrewSize

Proper installation of self-drilling screws depend on a number of factors and can (mostly) be controlled by the user. The table to the right, can be used as a guide to help properly install different nominal screw sizes. *Suggested combined maximum values. Values may be increased or decreased, as long as associated variable are changed proportionally.

  • Screw Point Geometry – the shape of the self-drilling screw drill point, not directly adjustable by the user
  • RPM – the speed of the drill/driver motor while installing the screw. Can be adjusted using a variable speed drill/driver
  • Applied Force – a measurement of the force applied by the user as the screw is installed, more force is not necessarily better
  • Work Material Hardness – the material’s resistance to drilling or cutting, in most cases, the harder the material, the more difficult it is to drill/cutSelfDrillingScrewAnatomy

Important Features to Consider When Choosing a Self-Drilling Screw

When selecting the correct self-drilling screw for your application, there are a number of factors to take into consideration. This includes the types of materials being attached and the thickness of the materials. In addition to the working material, the following design features should be also be considered before selecting your screw.

  • Drill Flutes – allow the drilled material to exit the hole, once completely embedded, the flutes can no longer remove these chips. These chips contain approximately 80% of the heat created during the installation process. If these chips buildup, this could cause the point to over-heat and fail.
  • Point Length – determines the thickness of the material which the screw can dependably drill through. The pilot section of the drill point, unthreaded portion, must be able to completely drill through the working material before the threads engage. Fasteners can bind and break if the threads engage before drilling is complete.DrillPointWings
  • Point Wings – are not present on all self-drilling screws, they are used when you need to fasten thicker materials, such as wood to metal applications. When drilled, the wings will enlarge the hole in the fastened material, allowing the threads to pass through without engaging the threads. This added clearance prevents the separation of the materials being fastened together, known as jacking. The wings will then break away once the come in contact with the metal before the threads engage the metal.

Self-Drilling Screws Available at Tanner

At Tanner we offer one of the most complete lines of self-drilling screws available. Choose from: Standard Self-Drilling Screws, Bi-Metal Self-Drilling Screws, Self-Drilling Reamers, Structural Self-Drilling Screws, Tamper-Resistant Self-Drilling Screws & much more! If you have any trouble finding a particular size or style of screw online, please feel free to reach out to one of our knowledgeable product specials – Email: websales@tannerbolt.com | Phone: 800-456-2658

Don’t Forget About

  • Screw Drill Point Material – are usually plain carbon steel which is less stable at high temperatures. To help reduce the wear on the drill point, fasten using a motor drill rather than an impact driver or hammer drill.
  • High Temperature Failure – the heat generated when drilling in self-drilling screws affects how quickly the drill point fails. For additional information on this, please refer to the troubleshooting guide below.
  • Drilling Temperature – motor RPM, applied force and work material hardness, all contribute to the the drilling temperature. Increasing any of these values also increases the heat generated.
  • Reducing Applied Force – this can help increase durability, allowing the drill point to penetrate thicker materials.
  • Reducing Motor RPM – this can help improve the performance when drilling into harder materials. This will allow the user to push harder during the drilling process and extend the drill point life.

Drill Point Failure Examples

What Screw Point is This? Understanding Screw Point Styles

Learn More About the Most Popular Screw Point Styles

In this blog post, you will learn more about the most popular Screw Point Styles on the market today. With such a wide variety of styles and variations out there, having background knowledge of each type will help you better choose the correct screw types for all of your future fastening applications. Selecting the correct screw point for your application is more important than you may think. The screw point provides a transition between the threads and the point, as well as helping with proper alignment.

Breaking Down Screw Points

To begin, we can categorize screw points into (5) major product groups, with each group having a number of different screw points available.

Screw Point Styles Explained

Tapping Screws

type a point Type A Point A thread forming screw with coarse threads and gimlet point for use in thin metal .015 to .050 thick. Used with drilled, punched or nested holes in sheet metal, resin impregnated plywood, and combinations of material.
type ab point Type AB Point A thread forming screw with spaced threads and gimlet point, combining the locating point of Type A with thread size and pitch of Type B. Normal limitations of type B apply. They are used in thin metal, resinous plywood, and various composite boards. Type AB screws offer a wider range of applications over Type A screws.
type b point Type B Point A thread forming screw with spaced threads and a blunt point with incomplete entering threads for use in heavier metal .050 to .200 thick. Larger root diameter with finer thread pitch for light and heavy sheet metal non – ferrous castings, plastics, impregnated plywood, combinations of materials, and other materials.
type bp point Type BP Point A thread forming screw with spaced threads and a cone point for use where holes are slightly misaligned. Used in heavier metal .050 to .200 thick. Larger root diameter with finer thread pitch for light and heavy sheet metal non – ferrous castings, plastics, impregnated plywood, combinations of materials, and other materials.
deckingscrew17 Type 17 Point A thread cutting screw especially for wood, with a coarse tapping screw thread and a special long sharp point fluted to capture chips. The type 17 point helps the screw penetrate quickly in some of the hardest woods.

Thread Cutting Screws

type f point Type F Point A thread cutting screw with machine screw thread with a blunt tapered point, having multi-cutting edges and chip removal cavities.For heavy gauge sheet metal, aluminum, zinc and lead die castings,cast iron, brass and plastic.
type 1 point Type 1 Point A thread cutting screw with single flute for general use. Produces a fine standard machine screw thread for field replacement. These are also known as a Type D thread cutting screws.
type 23 point Type 23 Point A thread cutting screw with fine machine screw threads, a blunt point and tapered entering edges. These screws offer maximum thread cutting area and excellent chip clearing, with minimum tightening torques. They are used in nonferrous castings, steel sheets, plastics, brass, cast iron, etc. Also known as a type T thread cutting screw.
type 25 point Type 25 Point A thread cutting screw similar to type 23 point except with coarse Type B thread. Type 25 screws have spaced, incomplete tapered threads with a blunt point and tapered entering edges, with one or more cutting edges and chip removal indentations. They are used in plastic, asbestos compositions, and other composites. These screws are also known as a type BT thread cutting screws.
type 17 point Type 17 Point A thread cutting screw for wood with a coarse tapping screw thread and a special long sharp point fluted to capture chips. Type 17 points can also be on Hi-Lo, deep root, deck screws and partical board screws.
type bf point Type BF Point Thread cutting screw with type B threads and blunt taper point having multiple cutting edges and chip cavities.
type g point Type G Point Blunt die point with a single through slot to form two cutting edges. For same general use as type C but where less driving torque is required.

Thread Forming Screws

tri-round Tri-Round: Type TT Point A thread forming screw in mostly coarse machine screw threads. It gives a further advantage of not producing chips verses a thread cutting screw in an untapped hole. Three vertexes perform a roll – forming process to form mating threads. These can be used to eliminate the tapping of unthreaded holes. Much better thread forming than Type C or CA, and drives with less torque.
type c point Type C Point A thread forming screw with either coarse or fine pitch machine screw thread and blunt tapered point. Eliminates chips and permits replacement with standard screw in the field. Higher driving torque required. Type C points are usable in heavy sheet metal and die castings.
type ca point Type CA Point A thread forming screw with either coarse or fine pitch machine screw thread. Same as Type C except with a Gimlet point. The locating point works better than Type C where holes between two adjoining pieces of sheet metal may be somewhat misaligned.
type pt thread Type PT Point A 48° or 60° thread feature reduces displacement of plastic for less internal stress and less tendency to fracture bosses. Better drive/ strip ratio and strip torque are obtained when compared with conventional Type B tapping screws. A good choice for plastic applications.
type hi-lo point Type Hi-Lo Point A Hi-Lo is a dual lead thread forming screw for use in plastic, nylon, wood, or other low density materials. The thread design reduces driving torque, improves drive to strip out torque and lessons the risk of cracking the application.
low root Low Root Point Low root thread is designed in sharp points or blunt points. The wide spaced thread forming screw is designed for plastic applications due to the increase in the drive to strip out ratio and reduced cracking of the boss.

Self-Drilling & Self-Piercing Screws

self-piercing Self-Piercing Point Produces more secure sheet metal assemblies. This fastener can be used as self-drilling screw or used to drive thru pre-punched holes or no holes in light gauge sheet metal. The twin lead drills straight thru sheet metal at peak speed. Perfectly mated threads increase strip and back out pressures. These are also know as a needle point, speed points or sprint points.
self-drilling Self-Drilling Point Comes with drilling points that will drill through metal, wood, and plastic applications. Eliminates all hole preparation, therefore reducing the in-place fastener cost. No punching, drilling or tapping required. There are several points styles including type 2, 3, 4 & 5 drill points depending on the application and size.

Machine & Tapping Screws

header point Header Point One of the least expensive pointing operations applied at the time of heading. This operation provides an end chamfer starting with a diameter smaller than the root diameter of the thread. The minimum reduction of the point is approximately 10% below the maximum minor diameter with an included angle of 40 to 50.
dog point Dog Point A straight pointed section reduced in diameter slightly below the root diameter of the thread, usually extending in length about two-thirds the diameter of the thread. Recommended for ease in starting, to insure against stripping fine threaded products, and to increase efficiency along production lines.
rolled point Rolled Point An efficient method of producing pointed long studs or long screws with an end chamfer similar to the Die Point. The last thread and a half is slightly cupped by the thread roll-over operation.
pinch point Pinch Point (Rounded) An inexpensive method of applying a 40°, 60° or 90° lead-in point having a slightly rounded contour but with pinch-off marks on its surface. Used for aligning several sheets or assembling several parts requiring pilot action.
nail point Nail Point (Pinched) Usually supplied with an approximate 45° included angle having a sharp point and slightly squared surface. Used for impinging or locking against wood or other soft material. Other degrees of included angle and sharpness also available.
cupped point Cupped Point A special cup section supplied on the end of the threaded member having a depression in the end to reduce the area in contact with the surface which increases its holding and locking power under pressure.
round point Round Point A dome-like rounded surface applied to the end of a threaded member in order to offer pressure without disfigurement. Used for adjusting members where friction without cutting action is desirable.
cone point Cone Point A precision forming operation to provide any required included angle. Offers a smooth surface, accurate length, and a sharp point which can be produced to any desired contour to fit your particular requirements.
u drive point Type U Drive Point A thread forming screw with round head metallic drive screws having multiple start threads of large helix angle, with a pivot. featuring case-hardened threads, designed to be harder than the mating part. The Type U-Drive Screw is used when an attachment is not meant to be removed. It is driven into an undersized hole for great adherence, usually in metals or plastics. U-Drive Screws also have a round, unslotted head, again intended for a permanent fixture.

Looking for Quality & Reliability Fasteners – Choose Simpson Strong-Tie

Simpson Strong-Tie Self-Drilling Screws

Driven to Exceed Expectations

In the vast, extremely competitive fasteners industry, Simpson Strong-Tie stands above the rest. Simpson Strong-Tie’s top priority is to deliver high quality and reliable products that their customers can put their trust in. This is why each production of fasteners is put through rigorous tests to ensure their fasteners can handle higher loads, resist corrosion and make installation more efficient. Due to the dedication that Simpson puts into the production of their products is why Tanner is proud to be able to offer these high quality products to our customers. Read on to learn more about some of our latest additions to our ever growing fastener inventory.

Latest Self-Drilling Additions

Strong-Drive® Self-Drilling X Metal Screws

*Collated Option Also Available*

Strong-Drive® Self-Drilling X Metal Screws are commonly used for fastening steel decking to structural steel, steel stitching (“side-lap” stitching) and cold-formed steel framing.

  • 5/16″ Hex Head
  • Drill Point
  • Hex-Washer HeadStrong-Drive-Self-Drilling-X-Metal-Screws
  • Available in Straight Collation

Codes & Listings

  • ICC-ES ESR-3006
  • IAPMO UES ER-326
  • State of Florida FL16937
  • City of Los Angeles RR25670
  • City of Los Angeles RR26009
  • FM Approval 3045651 & 3050714 (XU only)
  • ASTM C1513 Compliant
  • SDI DDM03 Appendix VII

Warnings: Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use this product in dry, interior, and noncorrosive environments only.


Strong-Drive® PPSD SHEATHING-TO-CFS Screws

*Collated Option Also Available*

Strong-Drive® PPSD SHEATHING-TO-CFS Structural Screws are used for fastening wood subfloor/sheathing to cold-formed steel. (#8 — maximum thickness: 54 mil / 16 ga.; #10 and #12 — maximum thickness: 97 mil / 12 ga.)

  • Flat Head with Nibs for Easier Countersinking
  • #3 Square Drive
  • Fine ThreadsStrong-Drive-PPSD-SHEATHING-TO-CFS-Screws
  • Pilot Point
  • #8 & #10 Screws Meet Minimum Head Diameter Requirement Per AISI S213-07, Lateral Design Standard
  • Quik Guard® & Yellow Zinc Coating
  • Available in Curved Collation

Codes & Listings

  • ICC-ES ESR-3006
  • City of Los Angeles RR25670
  • ASTM C1513 Compliant

Warnings: Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use this product in dry, interior, and noncorrosive environments only.


CBSDQ Sheathing-to-CFS Screws (Collated)

CBSDQ Sheathing-to-CFS Screws are used for securing sheathing to cold-formed steel (recommended thicknesses: 16 and 18 ga.).

  • Ribbed Flat Head with Nibs for Easy Countersinking
  • #2 Undersized Square Drive
  • #2 Drill Point with Wings
  • Quik Guard® CoatingCBSDQ-Sheathing-to-CFS-Screws
  • Curved collation

Codes & Listings

  • City of Los Angeles RR25670
  • ASTM C1513 Compliant
  • #8 Screws Meet Minimum Head Diameter Requirement Per AISI S213-07, Lateral Design Standard

Warnings: Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use this product in dry, interior, and noncorrosive environments only.