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 5945-01-294-4114
NSN 5920-01-419-4291
NSN 5960-01-305-5449
NSN 6610-00-070-0011
NSN 6650-01-064-0869
NSN 5965-01-125-5367
NSN 5999-01-521-2484
NSN 5985-01-120-4018
NSN 5985-00-623-0328
NSN 5975-01-442-4493
NSN 6105-01-450-3605
NSN 5935-01-475-4334