X1/9 M12 Nord-Lock Wedge Locking Washer

M12 Nord-Lock wedge locking washer. Through hardened steel washer, zinc flake coated, for general steel applications. These are an industry approved technology used to provide a secure fitting with increased reliability. The system comprises of a pair of lock washers that have cams on the inner sides and radial grip teeth on the outer sides. Supplied individually as a lightly glued pair for ease of assembly. For nut to stud and bolt to threaded hole use, one washer pair is used; for bolt and nut through hole use, one washer pair is required on each side. Do not use any additional plain washers in the assembly.