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 6320-01-583-6809
NSN 5835-01-307-4512
NSN 5920-01-128-3572
NSN 6110-01-121-8318
NSN 5950-01-606-3862
NSN 5990-01-462-1617
NSN 7035-00-312-3055
NSN 6240-01-420-5905
NSN 2925-01-390-7963
NSN 5990-00-853-7794
NSN 5925-01-313-7188
NSN 5996-00-597-2234