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 6685-01-351-9055
NSN 6105-01-331-1774
NSN 5990-01-264-6512
NSN 7035-00-312-3055
NSN 2925-01-097-0903
NSN 7035-01-652-4283
NSN 5935-01-415-8371
NSN 5945-00-728-2155
NSN 5950-00-951-3129
NSN 6650-01-024-9554
NSN 5975-00-322-9865
NSN 5925-00-507-1295