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 6130-01-542-6876
NSN 5855-00-757-5149
NSN 5855-00-058-1293
NSN 5895-01-133-6600
NSN 6320-01-631-7828
NSN 6610-01-233-5857
NSN 5975-01-354-3640
NSN 5996-01-141-8821
NSN 6610-01-032-2890
NSN 5999-01-177-6380
NSN 4140-00-497-3416
NSN 6150-01-335-6615