Bearing Locknuts provide positive rotational lock under vibratory conditions and maintain precise torque pre-loads in applications.

PCC’s STA-LOK® system uses a serrated washer that installs onto a serrated shaft and then snaps into or over the nut to retain it. The precision and effectiveness of this mechanical lock has made it the industry design standard.

PCC Bearing Locknuts are available in advanced aerospace alloys with either internal or external threads, internal or external wrenching slots or holes, and metallic or nonmetallic locking devices in sizes from 0.5 to 8 inches in diameter.