What is Torque-Tension Testing?
Torque-tension testing is an aid to fastener and process engineers in developing installation torque specifications for industrial assembly operations. Fastener manufacturers also use these tests in product development. Torque-tension tests are used for free-spinning as [...]
Metric Threads – Threads Part 3
In Part 1 of our Threads Series, we provided some terminology and explained some of the nomenclature of Unified Inch Series threads. In Part 2, we talked about the difference between 2A and 3A threads, [...]
The Difference Between 2A and 3A Threads – Threads Part 2
In Part 1 of our Threads Series, we provided some terminology and explained some of the nomenclature of unified inch series threads. Now, in Part 2, we're going to be talking about the difference [...]
The Basics of External Threads – Threads Part 1
Threads are quite amazing when you stop to think about it. Yeah I know, nobody ever stops to think about threads. But consider this: a properly made bolt subject to extreme tensile stress will break [...]
Proof Load, Yield Strength, and Tensile Strength of Fasteners
Proof Load, Yield Strength, and Tensile Strength of Fasteners In the fastener world, you’ll often hear terms like proof load, yield strength, and tensile strength tossed around when referring to the strength of a given [...]
Bolt & Screw Head Markings and What They Mean – Part 3
Metric Head Markings - Bolt & Screw Head Markings and What They Mean – Part 3 In Part 3 of our series on head markings, we’re going to talk about metric fasteners. We’ve already covered [...]