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An externally threaded fastener with unified threads, a cylindrical head with a chamfered top surface, knurled cylindrical sides and hexagonal recess, made from alloy Steel.
Ideal for precision assembly work with close tolerances and applications needing a well tooled appearance.
Supplies greater tensile strength than equivalent sizes of Grade 5 or Grade 8 hex head cap screws while requiring less surface area or counterbore since the fastener is internally wrenched.
Standard inner hexagon, uniform force, not easy to slip when rotating
Deep thread, high hardness, strong toughness, sturdiness and durability
The whole body is smooth and has no burrs, and the force is even and does not lose teeth
Lonnie Beckwith
Reviewed in the United States on March 4, 2025
OK product but rust very quickly.
James Clark Puckett
Reviewed in the United States on August 20, 2024
I am using these as a battery cable bolt application. The knurled bolt head is easy to grasp with my fingers, making quite easy to remove or install the cable to the battery of my lawn tractor. Used with a corresponding wing nut it is easy-peasy.
Dane
Reviewed in the United States on June 21, 2024
Good quality screws
Gary B
Reviewed in the United States on July 26, 2023
Just bought these as refills for my box of cap screws. My most used size.
Mustang Gregg
Reviewed in the United States on December 24, 2022
I use a lot of these. Good hardware.
Mike Lovell
Reviewed in the United States on March 12, 2021
Great product, hard to find on Amazon - it took awhile and the Amazon tool used for detail searching doesn't work well
Ozzy44
Reviewed in the United States on January 22, 2021
These screws were EXACTLY what I needed to attach the carburetor to a Tecumseh engine. They appear to be made of GOOD grade steel. Price was decent and delivery (thru Amazon) was quick, as always! I would 100% recommend these fasteners!
zaphod
Reviewed in the United States on December 19, 2020
I only needed one, so I have a lot left over. It fits my camera and I use for the custom mount I made.
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