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 6685-00-436-7635
NSN 5925-01-497-3259
NSN 5996-01-657-1447
NSN 7035-01-587-8031
NSN 5965-01-026-1125
NSN 5925-00-440-5177
NSN 5990-00-288-1820
NSN 5990-00-219-7413
NSN 6645-00-192-1152
NSN 7035-00-295-0451
NSN 4140-01-050-2022
NSN 5920-01-107-0838