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 6150-00-118-9231
NSN 5855-01-364-8193
NSN 5960-01-588-1441
NSN 5985-00-132-6897
NSN 5999-01-317-3990
NSN 6130-01-449-7222
NSN 5910-01-066-0803
NSN 5905-01-220-5483
NSN 6135-00-276-7625
NSN 5935-00-017-4795
NSN 6645-01-562-1351
NSN 5965-01-451-2481