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 5965-01-317-2093
NSN 5960-01-142-1995
NSN 5960-01-185-4216
NSN 6145-01-602-1154
NSN 5960-01-262-5048
NSN 6685-00-581-2688
NSN 6110-01-238-6906
NSN 5920-01-147-4903
NSN 2925-01-406-9844
NSN 6135-01-408-0313
NSN 5975-00-681-5900
NSN 5960-00-847-1581