HEAVY DUTY INTERNAL TYPE LOCKWASHERS

• Retain 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.

Typical Applications: Castings, heavy machinery and equipment.

We also have Mil-Spec Heavy Duty Internal Type Lockwashers.

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.