West Coast Lockwasher - Toothed Lock Washers

Toothed Lock Washers
General Toothed Lock Washer Information ( PDF ): How the twisted tooth prevents loosening; plus materials, finishes and Mil-Specs.
External Type Lock Washers: Provide maximum torsionsal resistance. Work best with large head screws ( round, pan, binding, washer head). External Type Lock Washers External Type Lock Washers( Mil-Spec)
Internal Type Lock Washers: Work best with smaller head screws (such as fillister heads). Use where appearance warrants that teeth be hidden or where snagging or scratching could be a problem. Internal Type Lock Washers Internal Type Lock Washers (Mil-Spec)
Heavy Duty Internal Type Lock Washers: Sustain locking tension under heavy loads. Use with heavy bolts and nuts and with heat treated bolts. Strong internal teeth lock into bolt head or nut to prevent backoff rotation. Heavy Duty Internal Type Lock Washers Heavy Duty Internal Type Lock Washers (Mil-Spec)
Countersunk Type Lock Washers: For use with flat and oval head screws having either 80° or 100° countersunk angles. Where appearance or snagging are important considerations a version with a smooth external flange and internal teeth is available. Countersunk Type Lock Washers Countersunk Type Lock Washers (Mil-Spec)
External-Internal Type Lock Washers: Ideal for electrical bonding. Use where large bearing surface is desired or to span oversized or elongated holes. Also used as insert between two adjustable pieces to maintain their position after orginal setting. External-Internal Type Lock Washers External-Internal Type Lock Washers (Mil-Spec)
Pyramidal Type Lock Washers: Provide exceptional holding strength and withstand high torques. Ribbed for rigidity under load. Sharp points on periphery resist shifting and internal teeth lock into bolt head or nut to prevent backoff. Pyramidal Type Lock Washers
Dome Type Lock Washers: Distribute heavy loads over wide area. Should be used with soft or thin materials when considerable force is needed to acheive a secure assembly. Also support fastening loads over large or elongated holes. Plain Periphery Style: Prevents marring of bearing surface. Tooth Periphery Style: Provides added protection against shifting. Dome Type Lock Washers
Dished Type Lock Washers: Use where resilience as well as force is needed when fastening in soft or thin materials. Distribute load over wide area and span oversized or elongated holes. Plain Periphery Style: Used to avoid surface marring or exposed teeth. Flat Rim Style: For plastics and other fragile materials. Toothed Periphery Style: Provides added resistance to loosening or shifting. Dished Type Lock Washers
Wide Rim Type Lock Washers: Use with screws and bolts having large diameter heads when extreme torques are not required. Span oversized and elongated holes. Washers with internal teeth are available where external teeth extend beyond screw head or where exposed teeth are not acceptable. Wide Rim Type Lock Washers
Narrow Rim Type Lock Washers: These tooth washers have a small O. D. in relation to I. D. Used with small headed screws and special narrow rimmed nuts. Ideal where clearance or appearance may be a factor. Available with external or internal teeth. Narrow Rim Type Lock Washers
Alternate Internal & External Type Lock Washers: Used with adjustment screws to maintain position. Under load, two-way strut action strongly resists rotation in either direction. Provide torque brake and contribute to the maintenance of precise tension in the assembly. Alternate Internal & External Type Lock Washers
Pipe Lock Washers: Fit pipe diameters. Used with nuts having large internal diameters in relation to their outside diameters. Typical applications include lamp and instrument board assemblies. Pipe Lock Washers
Metallic Torque Washers: These square holed washers are designed for use with carriage bolts. Four bent prongs on washer can be embedded in wood, plywood or other ductile materials, making the washer self-retaining during assembly. Square shouldered carriage bolt mates with square holed washer and will not rotate. Metallic Torque Washers

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