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 6135-01-506-0759
NSN 6650-01-004-1625
NSN 5985-00-103-5217
NSN 2925-01-520-4194
NSN 6130-01-138-9055
NSN 5920-01-535-0796
NSN 5996-01-086-8131
NSN 5855-00-235-2676
NSN 5996-01-020-5759
NSN 6610-01-075-2615
NSN 5985-01-088-6705
NSN 5960-00-140-9583