Tag Archives: self-drilling

Articles, Fasteners

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
Articles

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

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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
Articles, Fasteners

Self-Drilling Screws – How They Work

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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

Articles, Fasteners

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

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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.

Articles, Fasteners

How do I Choose the Correct Self-Drilling and Self-Tapping Screws??

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Self-Drilling Screws

Self-Drilling Screws operate on the same principles as drill bits and other cutting tools. This means that the way in which these screws are used affects their performance as much how they are designed.

Two important factors to consider when selecting a self-drilling screw are, material thickness and types of materials to be joined.

Screw Suitability
Optimal Cutting Parameters by Screw Size

 

 

 

 

 

 

Key Design Features to Consider when Selecting a Suitable Self-Drilling Fastener

  • Drill Flute

    • The length of the drill flute determines the metal thickness that can be drilled. Drill flutes allow the drilled material to exit the hole. If the drill flute becomes completely embedded in the material, the drill chips will clog the flute and cause the cutting action to cease. If this occurs, the heat from the drill chips could cause the drill point to become over-heated and fail.

  • Point Length

    • The drill point is the unthreaded section from the drill point to the first thread. This length must be long enough to completely drill through the material before the threads engage. If the threads engage too early, they can cause the fastener to bind and break.

  • Screw Wings

    • It is necessary to use fasteners with wings when fastening wood, over ½” thick, to metal. The wings will ream a clearance hole and keep the threads from engaging too early. If the threads engage too early, this could cause a separation of the fastened material from the base material (jacking). Once the wings hit the metal material, they will break off allowing the threads to engage.

 

Self-Tapping Screws

Self-tapping screws can tap its own hole as it is being driven into it. They can come with a sharp, piercing tip or a flat, blunt tip. Sharp tipped self-tapping screws are designed for drilling their own hole in soft materials. The flat tipped self-tapping screws will need a pilot hole drilled before being installed. Some self-tapping screws are also self-drilling screws. These screws have a drill-like flute tip that looks like the tip of a center drill, along with the tap-like flute in the leading threads. These screws are very efficient in hard substrate applications.

How the Self-Tapping Ability is Created

  • Hard Substrates – Metal or Hard Plastics

    • Often created by cutting a gap in the continuity of the thread on the screw, this generates a flute and cutting edge similar to those on a tap.

  • Soft Substrates – Wood or Soft Plastics

    • The self-tapping ability can come simply from a tip that tapers to a gimlet point (no flute is needed), the point forms the hole by displacement of the surrounding material rather than any chip forming drilling/cutting/evacuating action.