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 6135-01-322-4655
NSN 6145-01-586-7800
NSN 2925-01-519-3221
NSN 5950-00-151-9827
NSN 6240-01-486-6451
NSN 5930-00-670-0691
NSN 6145-00-144-0918
NSN 5905-01-396-5603
NSN 5960-01-430-3911
NSN 5965-01-202-1007
NSN 5905-01-527-6673
NSN 6645-00-515-6148