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 5835-00-474-6085
NSN 6220-01-232-1572
NSN 5990-00-952-0696
NSN 5996-01-023-7896
NSN 6685-00-759-9801
NSN 6135-00-816-9052
NSN 6150-01-340-9460
NSN 5965-00-058-6751
NSN 6135-01-164-3561
NSN 5930-00-177-9383
NSN 5990-00-127-6749
NSN 5855-00-058-1293