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 5985-01-280-5497
NSN 6650-01-356-2306
NSN 4140-00-987-7532
NSN 5999-01-335-5576
NSN 5920-00-858-8161
NSN 5910-00-081-1041
NSN 5895-00-835-8969
NSN 5835-01-464-2662
NSN 5998-01-275-1747
NSN 6610-01-555-8364
NSN 5945-00-900-8991
NSN 5985-01-282-0536