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 5985-01-583-1576
NSN 5998-01-207-8606
NSN 6130-01-440-7591
NSN 5965-00-113-9748
NSN 5975-01-223-8399
NSN 5935-00-702-3808
NSN 6645-01-529-8822
NSN 5998-00-277-7552
NSN 5999-00-796-3593
NSN 6645-01-400-2119
NSN 5855-00-912-3885
NSN 5999-01-396-9773