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 6620-01-361-6460
NSN 5835-01-399-5820
NSN 4140-01-005-0154
NSN 5915-01-582-3971
NSN 5915-01-025-1362
NSN 5999-01-601-4587
NSN 6110-01-139-6243
NSN 5990-01-561-7802
NSN 5996-01-206-0434
NSN 6135-00-194-9354
NSN 5945-01-529-6523
NSN 6685-01-526-2039