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 6610-00-751-7916
NSN 5920-00-391-6252
NSN 4140-01-268-1351
NSN 5945-01-241-6469
NSN 2925-01-225-0713
NSN 7035-01-383-6549
NSN 4140-00-248-9441
NSN 5965-01-585-6958
NSN 5990-01-247-5439
NSN 4140-00-494-2569
NSN 5998-01-119-2982
NSN 5985-01-185-2994