Tanner Resource Center

Hex Cap Screws are a common fastener used in construction and machine assemblies. Learn more about the materials, head markings, threading, dimensions, and more with our Hex Cap Screw Tech Spec data page.

Please use the following table for standard bolt thread lengths

Stainless steel is used extensively throughout industry for both original equipment manufacture as well as for replacement. Stainless steel is a family of iron-based alloys containing about 10.5% chromium or more, plus other alloying elements such as nickel, manganese, molybdenum, sulfur, selenium, titanium, etc. The chromium is chiefly responsible for corrosion and heat resistance; the other alloying elements are present in stainless steel to enhance corrosion resistance and to impart certain characteristics with respect to strength and fabricability.

Screw Point Types come in a many options to handle a large variety of industries and applications. Knowing the material, the application and other factors that make up your fastening situation, selecting the correct Screw Point Type can be critical to fastening the right way.

Drive Types come in quite a few varieties. Which fastener drive type to use depends on your application, material being fastened and more. Use the chart below to identify with different drive types available. Please note that you will not find all these drive types on our site, but as a Fastener Expert we are providing you with this helpful Fastener Drive Type chart.

Tensile strength or ultimate strength is that property of a material which determines how much load it can withstand without breaking. Alloy metals are also typically more corrosion resistant - learn more about alloy strength characteristics, load information, shear strength, yield strength and more.

Screw & Bolt Head Styles come in a variety of shapes and sizes to handle different industry needs and applications. Knowing the material, the application and other factors that make up your fastening situation, makes the selection process easier in choosing the correct head style.

Screw Point Types come in a many options to handle a large variety of industries and applications. Knowing the material, the application and other factors that make up your fastening situation, selecting the correct Screw Point Type can be critical to fastening the right way.

Corrosion can cause fasteners to fail by wearing away or altering the fastener material by galvanic (electrochemical) reaction or by direct chemical attack. Be prepared for your next harsh environment application with the correct corrosion-resistant fasteners and never have a structure or connection fail on you again. Learn more about direct chemical attack and general fastener corrosion

Galvanic (electrochemical) reaction can cause fasteners to fail by wearing away or altering the fastener material. Be prepared for your next harsh environment application with the correct corrosion-resistant fasteners and never have a structure or connection fail on you again. Learn more about galvanic fastener corrosion

Thread / Screw Drill & Tap Chart for identifying proper threading & drilling at Tannerbolt.com Resource Center

Use the following coarse and fine thread dimensional charts for detailed information on the coarse screw threads (UNC) and fine screw threads (UNF)

Side by side comparison of Fine Thread vs Coarse Thread with benefits, implications and other useful information to help understand why, when and where to use fine or coarse threading for your fastening application.

“Thread galling” or “cold welding, ” as the term is often called, occurs during the installation of bolts and nuts where the bolts are twisting off and/or the bolt’s threads are seizing to the nut’s threads. Thread galling seems to be most prevalent with fasteners made of stainless steel, aluminum, titanium and other alloys that self-generate an oxide surface film for corrosion protection. During the tightening of the fastener, pressure builds between the sliding contacting thread surfaces and breaks down the protective oxide coatings. Learn more...

Useful fastener tech data and charts for typical nut wrench sizes to make selecting your tools & fasteners quicker and easier.