Steel, cadmium plated washer
A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5915-01-464-4926
NSN 4140-01-543-6489
NSN 6150-01-427-3764
NSN 6650-01-573-7165
NSN 5930-01-451-4331
NSN 6685-01-632-5278
NSN 5985-01-571-4702
NSN 5998-01-542-8272
NSN 6240-01-073-4732
NSN 5990-00-121-2134
NSN 5855-00-361-0167
NSN 5965-01-279-4806