This all-metal, free-running, self-energizing reusable locknut is manufactured in stainless steel (303, A286 or 90) and 95% Ni stainless-steel alloy and is suitable for protecting and preserving bolts, studs and axle shafts where vibration, tensile strength, corrosion and elevated temperatures are factors. The nut spins freely on the bolt down to the work. After the proper torque has been applied, the washer compresses, causing the threaded section inside the washer to move in and lock radially and axially on the bolt. When the threaded section inside the washer picks up all the load it can carry, it elongates a few thousandths of an inch, permitting the bulk of the load to move up into the main body of the nut. — TechRemedies, Inc., Austin, Tex.
A locknut for severe weather, vibrations and other extremes
| By Chemical Engineering