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 5965-01-128-7785
NSN 5996-01-426-1920
NSN 5910-01-631-4467
NSN 6320-01-608-1935
NSN 5905-00-157-9823
NSN 5920-01-020-7659
NSN 5925-01-507-7293
NSN 5945-01-319-8414
NSN 6130-01-421-1539
NSN 6610-01-238-8712
NSN 6135-01-317-6021
NSN 5945-00-803-7443