Product Description
NUT, JAM
Frequently Asked Questions
Q: What is a jam nut and what does the HW-923 do?
A: The HW-923 is a jam nut (also called a lock nut) used to prevent fastener loosening due to vibration in lift truck assemblies. It is tightened against a standard nut to create friction that locks the fastener in place.
Q: What equipment types use the HW-923 jam nut?
A: The HW-923 jam nut is compatible with electric lift trucks and pallet jacks from Crown, Toyota, Raymond, Yale, Hyster, and similar brands. Verify thread size and pitch match your equipment specifications.
Q: What material is the HW-923 jam nut made from?
A: The HW-923 is manufactured from carbon steel with appropriate heat treatment for durability. Steel jam nuts withstand vibration and temperature cycling in material handling environments better than softer metals.
Q: How do I know if the HW-923 jam nut needs replacement?
A: Replace the HW-923 jam nut if fasteners repeatedly loosen despite proper tightening, if the nut is stripped and cannot hold tension, or if corrosion prevents secure fastening. Damaged jam nuts no longer prevent vibration loosening.
Q: How does the HW-923 jam nut compare to nylon-insert lock nuts?
A: The HW-923 is a metal jam nut that works through friction between two nuts rather than a nylon insert. Metal jam nuts can be reused and tolerate higher temperatures than nylon-insert nuts, making them suitable for electric lift truck applications.