INTERNAL TYPE LOCKWASHERS

• Work best with smaller screw heads (such as fillister heads).
• Use where appearance warrants that teeth be hidden.
• Use where snagging or scratching could be a problem.
• Internal teeth lock into bolt head or nut to prevent backoff rotation.

MATERIALS: Part numbers shown are for washers made of spring steel. These washers are also available in bronze and bronze alloy and in 400 series stainless steel. Many of these are in stock at WCL. Washers can also be produced from 300 series stainless steel and other materials on request. Specify material when inquiring or ordering.

SPECIFICATIONS: All commercial, AN, MS and NAS lockwashers supplied by WCL Company and listed on these pages, conform to ASME B18.21.1 or applicable specifications as reported by IFI and other reporting agencies. Manufacturers in countries outside the United States including, Mexico, Canada, China, Taiwan, India, UK, Spain, and Russia, mfg. parts from tooling owned in part or wholly by WCL Company. Materials and plating comply with applicable specifications and supporting documentation is available with orders. Parts plated with commercial Zinc plating can be supplied with Hexavalent free chromates. Certification of RoHS compliance is available upon request. DFARS 252.225-7014 Alt. 1 compliance certifications, if applicable may be available. Please check with your sales person at the time of quotation.