3/8 Flat Washer .750 OD .125 Thick 1pk

The 3/8 flat washer .750 OD .125 thick 1pk is a precision fastener designed for automotive assembly, engine rebuilds, and suspension work where load distribution and vibration resistance are critical. This single-pack offering is ideal for mechanics who prefer stocking fasteners by application rather than in bulk.

Featuring a .750-inch outer diameter and .125-inch thickness, this washer provides superior clamping force distribution over a wider bearing surface than thinner alternatives. The 3/8-inch bore accommodates standard 3/8-inch fasteners, and the generous outer diameter prevents bolt heads from pulling through softer materials commonly found in modern engine blocks and transmission housings.

Professional mechanics and serious DIY enthusiasts rely on correctly sized flat washers whenever reassembling critical fastening points, where bolt preload and clamping consistency directly affect component longevity. Precision manufacturing ensures consistent flatness and dimensional accuracy, reducing the risk of uneven load concentration that can lead to stripped threads or material deformation during assembly or disassembly cycles.