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 6110-01-312-3629
NSN 6150-00-553-5178
NSN 5835-01-030-8914
NSN 5855-00-247-7219
NSN 4140-01-218-4999
NSN 5945-00-132-6428
NSN 5925-01-088-6863
NSN 6610-01-445-6362
NSN 5990-01-264-9759
NSN 5965-01-275-2212
NSN 5925-00-105-2125
NSN 5960-01-454-7064