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 6610-01-483-4347
NSN 2925-00-953-0625
NSN 6105-01-234-9155
NSN 5945-01-242-7552
NSN 5910-01-384-9741
NSN 5990-01-201-4852
NSN 5999-01-010-1082
NSN 5895-00-729-5479
NSN 4140-00-578-7726
NSN 5920-00-900-0220
NSN 5835-01-132-5894
NSN 6145-00-635-9957