All posts by Jason Miller

Security Fasteners & Tamper Proof Screws


Tanner Bolt & Nut Corp. features five types of security fasteners with unique drive configurations, each available in different head styles and materials. Security fasteners are cap screws, machine screws, self-drilling screws,concrete screws, sheet metal screws, nuts or bolts manufactured with a tamper proof or tamper resistant drive or head style. Installation tools are available.

The theory behind tamper-resistant fasteners is to make a fastener whose loosening requires a tool that a tamperer is unlikely to have on hand at the time of opportunity for tampering. There is no expectation that it will be impossible for a tamperer to obtain the driver. Rather, the main idea is simply that most tamperers will not bother to seek out and obtain a driver. In the cases of vandalism prevention and theft prevention, since most vandalism and theft incidents are simply crimes of easy opportunity, the idea is to “raise the bar” and make the opportunity less convenient.

A tamper proof fastener takes the theory one notch further. Some tamper proof screws require a tool that is proprietary and can only be obtained with the purchaser submitting documentation as to its intended use. Others can be installed with standard wrenches, but when tightened to a specific torque head shears off, leaving a conical, round, or flat head design that completely protects your property.

Continue reading Security Fasteners & Tamper Proof Screws

How a Blind Rivet Works?

blind rivetA blind rivet consists of two parts, a hollow, cylindrical body with a flared head and a solid-rod mandrel with a bulbed head that resembles a nail.

The body of the blind rivet is inserted in a hole in the materials to be joined or the blind rivet is placed into an installation tool, and then inserted into the application.

Activate the tool by squeezing the trigger in an air/hydraulic tool or the handles in a manual tool. The tool pulls the mandrel, drawing the mandrel head into the blind end of the rivet body. This action forms an upset head on the rivet body and securely clamps the application materials together.

The mandrel then reaches its predetermined break-load and will snap, with the spent portion of the mandrel breaking away and being removed from the “set” blind rivet.

Blind rivets are available in a range of body styles such as open, closed-end, and multi-grip, with head styles in button, countersunk and large flange and in materials such as aluminum, steel, copper, plastic and stainless steel.

Fast, easy-to-use blind rivets offer speed of assembly, consistent mechanical performance, and excellent installed appearance, making blind riveting a reliable and economical assembly method.

Visit the Blind Rivets & Rivet Tool section of

Metal Cutting Circular Saw Blades: Six Quick Tips for Longer Blade Life

The initial cost of a metal cutting circular saw blade is more expensive than wood cutting blades. The good news is there are simple tips that will extend your blade life and lower the overall cost-per-cut. The Morse Metal Devil® metal cutting circular saw blade can cut through solid steel plate (6” x ¼”) in less than 12 seconds. If that kind of time savings and productivity is something you can use on your next project, keep reading!


1)Metal Devil® metal cutting circular saw blades are engineered to use dry cut technology.  That means you do not need to use lubricant or coolant with the Metal Devil blades.

2)These blades perform best when used with low RPM metal cutting saws, such as the Morse Metal Devil 7, 9 and 14-inch saws.

3)Select the correct blade design for your application to achieve the best performance, such as steel, thin steel, or aluminum blade.

4)Clamp your material securely so that it does not vibrate or spin. Morse offers a V-block clamp for tubes.

5)Extend the blade completely out of the saw and use a guide or straight edge to make the cut.

6)Bring the blade to full speed before entering the cut and do not push the saw through the material. Slow down and let the teeth make the cut.


Consistently follow these steps to optimize your blade life.

Happy Sawing –

h/t Steve Whaley, Technical Support @ M. K. Morse


5 Tips for Using Blind Rivets Effectively

Fastening with blind rivets can be a cost-efficient method for fastening… some tips are


#1. The shear and tensile strength of the blind rivet selected and the number of blind rivets used in the application should equal or exceed the joint strength requirements.

#2. The blind rivet body material should be compatible with the materials to be joined to resist galvanic corrosion that may result in a reduction of joint strength. If dissimilar materials are widely separated on the galvanic chart, it is advisable to separate them with a dielectric material such as paint or other coatings.

#3. The total thickness of materials to be joined must be considered. Select the rivet “grip range” which includes the total thickness of materials to be joined.

#4. Use recommended hole sizes for each blind rivet. An undersized hole will not allow insertion of rivet body and an oversize hole may cause rivet failure, joint failure and could adversely affect rivet shear and tensile strengths.

#5. Various head styles are offered to accommodate different assembly needs. The most popular is the button head, whose lower-profile head is twice the diameter of the rivet body. This provides an adequate bearing surface for nearly all applications. The large flange rivet provides a greater bearing surface for fastening soft or brittle facing materials. The countersunk head rivet is available for applications where a flush appearance is required.

Visit the Blind Rivets section of

What are Rivet Nuts?

Rivet nuts are simple and reliable fasteners with internal threads that can be installed into thin materials such as panel, tube, extrusions, castings, plastics, and many other materials providing strong load-bearing threads. Once installed, the fastener remains captive to which a mating component can be attached using standard hardware.

Rivet nuts offer many benefits over nuts, bolts, weld nuts, self-tapping screws, and pressed inserts, primarily their faster assembly and lower installation costs. Rivet nuts are assembled “blind” from one side only, ideal for assembly of box, tube, extrusions, or closed sections. Rivet nut installation is very efficient by using easy-to-operate, inexpensive, lightweight hand tools or handheld powerful air/hydraulic setting tools. Rivet nuts install into a wide range of material thicknesses due to their wide grip range tolerance.

A rivet nut is applied strictly as a mechanical fastener with minimal deformation of the work-piece and no damage to pre-painted surface coatings. Installation is environmentally friendly and produces no harmful gasses, heat, dust or electromagnetic fields to affect workers.

Poly-Nut Rivet Nut




Visit the Rivet Nuts section of

Why Solar Companies Need to Address Panel Theft

The purchase, assembly, and installation of solar panels represent a significant investment. The value of solar panels has made them an inviting target for resourceful thieves. Solar panels can have a retail price approaching $1,000 each for some panels.

Very few solar systems today have any security measures to prevent theft. In fact, most solar panel rack systems secure solar panels with simple commercial fasteners. This requires little effort on the part of thieves to remove them.

Where access is easy and the potential for tampering and theft is high, protect your investment with Tanner Security Fasteners. The cost of our solar security fasteners is minimal compared to the potential cost of replacing damaged or stolen solar panels.

We are The Security Solutions Specialists. Tanner offers a complete line of security fasteners, anchors, and tools  including innovative products such as Secure Wedge-Bolt® Expansion Anchors and Trident® Security Nuts

Contractors in a wide variety of industries rely on Tanner for quick solutions to their security problems.

The Right Type of Fastener Can Make the Difference Between Success and Failure

Please find the following informative article detailing the use of selectively-hardened fasteners Bi-Flex and Dril-Flex in the construction of the Adrienne Arsht Center for the Performing Arts in Miami, Florida.

Selectively hardened fasteners with corrosion-preventative coating protect the integrity of the structure and avoid the dangers of hydrogen assisted stress corrosion cracking (HASCC), also known as delayed hydrogen embrittlement. In exterior applications or aggressive interior environments, bi-metallic or superalloy fasteners are recommended.

Labor-reduction associated with the new super alloy fasteners is expected to result in even more significant overall savings, especially on high-rise structures.

Please read further in the following pdf article, Small Details, Big Consequences

Stalgard® High-Performance Protective Coatings

Stalgard® is a durable, multilayer, corrosion-resistant coating, engineered to provide optimal performance in demanding construction applications.

Tanner offers several quality fastening products that are coated with Stalgard® finish.  Fasteners coated with Stalgard finish typically show no red rust or other base metal corrosion on significant surfaces even after 800 hours of 5% neutral salt spray exposure (ASTM B117).


Tanner  fastening products with Stalgard Corrosion Resistance Finish:

UltraCon Concrete Screws

Drill-Flex Structural Self-Drilling Screws

Crete-Flex Stainless Steel Concrete Screws

Bi-Flex 300 Series Stainless Steel Self Drilling Screws

Aggre-Gator 300 Series Stainless Steel Bi-Metal Concrete Anchors


Rebuilding America One Bridge at a Time with Reamers


Champion reamers are the choice for a Mississippi River bridge renovation project. The purpose of the project was to remove and replace deteriorated and damaged cantilever floor beam sections at 64 locations.

The project was awarded to heavy highways contractor Civil Constructors, Inc.

The number of holes to ream: 2,500.

Champion’s hex shank XL86 bridge reamers were used and were determined to be preferable to traditional taper shank bridge reamers.

According to Eric Loomis of Civil Constructors, Inc., “We experienced failures of other brands reamers with hex attachments and conversions. The strong integral hex head on these Champion reamers is bulletproof. These reamers performed beautifully with the use of cutting oil as a reaming aid. We were able to have these reamers re-sharpened which added even more value. We ended up using about 1/2 of the total reamers we had planned on using at bid time. These reamers out cut our previous brand 2 holes to 1.”

The project was completed in two stages, with phase 1 done in 9 1/2 weeks, and phase 2 in 15 weeks. Champion XL86 bridge reamers are available from 11/16 to 1-5/8” diameter. They are designed for aligning and enlarging holes in heavy-duty structural steel. The reamer features a hex shank, which is engineered to enable use in impact socket power tools.



New and Improved Sockets to Install Trident Nuts

Tanner has redesigned their 30TRI AND 40TRI Trident socket tools. The new design features an o-ring that securely holds the standard 7/8″ 12 point socket used in conjunction with the Trident socket when installing Tanner Trident™ Nuts .

The 30TRI fits Trident nut sizes 5/16”-18, 3/8”-16 and 8mm. The 40TRI fits nut sizes 1/2”-13, 5/8-11 and 10mm.

The Tanner Trident™ Nut is the smart solution against theft, unauthorized entry and vandalism.

Installation Instructions for 30TRI and 40TRI Sockets

Problems anchoring to hollow core precast plank or brick with weep holes?

The HollowSet Drop-In is specifically designed and engineered for anchoring in hollow base materials such as hollow concrete block, brick with weep holes and precast hollow core plank. It can also be used in solid base materials, and is appropriate for overhead applications. Great for anchoring in wall thickness as little as 1 inch. Sleeve is made from zamac alloy for better corrosion resistance, cone is available in carbon or stainless steel.

There are four easy steps for installation.

Step 1- Drill the appropriate hole size using a carbide bit.

Step 2- Attach the anchor to the setting tool and tap into predrilled hole. Turn the tool clockwise to pre-expand the anchor. Unscrew the setting tool and your anchor is set.

Step 3- Anchor is set.

Step 4- Put fixture in place and bolt in.