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 6610-01-625-6855
NSN 6150-00-818-1971
NSN 5960-01-252-8821
NSN 6105-01-503-5539
NSN 5975-01-571-8533
NSN 5855-01-010-4921
NSN 6685-01-519-9250
NSN 5950-01-446-2984
NSN 5925-00-659-8304
NSN 6685-00-404-8444
NSN 6135-00-165-3756
NSN 5835-01-616-6131