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 6135-00-995-1089
NSN 5895-00-999-6734
NSN 5925-01-430-3660
NSN 6650-00-590-9073
NSN 7035-00-286-6221
NSN 6150-01-646-8364
NSN 5925-01-118-3866
NSN 5935-00-316-9410
NSN 6610-01-141-9979
NSN 6645-01-500-5611
NSN 5920-00-628-2258
NSN 6105-00-252-9017