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 6685-01-371-9207
NSN 5990-01-092-1963
NSN 6620-00-296-6762
NSN 5835-01-182-1966
NSN 6650-01-446-6646
NSN 5999-01-168-8293
NSN 5905-00-642-8130
NSN 5990-00-542-3881
NSN 5996-00-920-4377
NSN 6240-00-925-2148
NSN 5990-01-318-3238
NSN 6320-00-139-1090