Functional principles


HEICO-LOCK® washers are wedge lock washers that positively lock fasteners using tension instead of friction.

The HEICO-LOCK® System is a pre-assembled pair of washers that have inclined clams on the inside and radial teeth/ridges on the opposite sides. Tightening of the bolt and/or nut leads to a gripping action of the teeth thus seating the surfaces. Tightening locks the Heico-Lock washers in place. Movement is only possible across the face of the cams. Working together, both sides of the lock washers combine into a fastening system that prevents loosening of joints by shock and vibration.