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 5910-00-158-5389
NSN 5965-01-588-8239
NSN 5999-01-395-5043
NSN 6110-01-561-6263
NSN 4140-01-601-1901
NSN 5915-00-412-3879
NSN 5945-00-286-8594
NSN 6130-00-269-4077
NSN 6645-00-496-7424
NSN 5835-01-339-0542
NSN 6650-00-855-9135
NSN 5920-01-466-4500