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 6105-01-601-1261
NSN 6130-00-005-0271
NSN 5895-01-552-0941
NSN 6135-01-423-3915
NSN 6135-01-631-0269
NSN 6220-01-618-7446
NSN 5915-00-239-3206
NSN 5910-00-288-5979
NSN 6130-00-880-3980
NSN 5990-00-116-6590
NSN 6650-01-104-6139
NSN 5965-01-425-1741