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 5960-01-438-0245
NSN 6240-01-182-7804
NSN 5895-01-427-3727
NSN 5950-00-269-4805
NSN 6130-00-595-5943
NSN 5990-01-324-7529
NSN 6240-00-333-5627
NSN 6145-01-145-5177
NSN 5990-01-216-0148
NSN 6135-01-154-3526
NSN 6105-01-513-3334
NSN 5985-00-719-4855