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 6240-01-288-9768
NSN 6145-01-364-4402
NSN 5925-01-018-3041
NSN 5895-01-068-3279
NSN 5999-01-205-5027
NSN 5930-01-418-3453
NSN 5855-01-545-3659
NSN 5950-01-587-4668
NSN 6240-01-394-8125
NSN 5975-01-563-2038
NSN 5950-00-529-0599
NSN 6130-00-513-9892