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 6685-01-478-4387
NSN 6145-01-422-0806
NSN 5975-01-556-8020
NSN 5855-00-688-9954
NSN 6650-01-138-1712
NSN 5920-01-020-7659
NSN 5925-01-139-9972
NSN 6650-00-150-6885
NSN 5930-00-138-9052
NSN 5999-00-201-4349
NSN 5920-00-690-1930
NSN 5996-01-088-7074