B3QRD Fasteners

The conical shape exerts locking force 360° around the underside of the screw head or nut. The ribbed top surface further enhances the locking force and resists the torqued fastener connection potential for loosening under pressure and vibration.

Nord-Lock washers are a type of wedge-locking washer that secure bolts using tension instead of friction. They are made up of two washers, one with cams on one side and the other with radial teeth on the other side. The cam angle is larger than the thread pitch, which causes the washers to expand more than the thread pitch and create a wedge effect. This wedge effect prevents the bolt or nut from rotating loose

Plain washer (or "flat washer") A flat annulus or ring, often of metal, used to spread the load of a screwed fastening. Additionally, a plain washer may be used when the hole is a larger diameter than the fixing nut