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 6320-01-292-2232
NSN 5996-00-050-0907
NSN 6650-01-291-1038
NSN 2925-01-323-9835
NSN 6130-00-456-4941
NSN 5905-00-449-3735
NSN 6610-00-949-6052
NSN 6620-00-078-4470
NSN 5910-00-737-5762
NSN 6105-00-228-4625
NSN 5855-01-534-5931
NSN 5965-01-005-0611