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 5990-01-503-6827
NSN 7035-01-371-0091
NSN 5960-01-250-1095
NSN 6685-01-180-0261
NSN 5990-01-476-0722
NSN 5996-00-077-3220
NSN 5990-00-351-5479
NSN 5895-01-329-3012
NSN 6650-01-069-6291
NSN 6220-00-403-3444
NSN 5835-01-426-6573
NSN 5945-01-539-7612