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 6610-01-359-7113
NSN 2925-01-394-5650
NSN 5905-01-284-0441
NSN 6150-00-080-2347
NSN 6320-01-381-7023
NSN 6240-01-580-1345
NSN 5965-01-358-6859
NSN 6240-00-792-5469
NSN 6110-01-286-9902
NSN 5999-01-295-0267
NSN 5990-01-442-3520
NSN 6240-01-493-5430