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 7035-01-098-5474
NSN 6620-01-371-1655
NSN 5999-00-230-5083
NSN 6240-01-069-2688
NSN 5950-00-515-3299
NSN 5950-00-690-4305
NSN 6145-01-364-7824
NSN 5930-00-649-5548
NSN 6145-01-032-1388
NSN 5915-00-056-3290
NSN 6130-00-259-1697
NSN 6610-01-158-7311