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 6150-01-417-3512
NSN 6645-01-495-0939
NSN 6110-00-705-5863
NSN 6105-01-589-5907
NSN 6620-00-273-8735
NSN 6135-00-767-0331
NSN 5965-01-237-3342
NSN 5985-01-575-6527
NSN 6145-00-126-1606
NSN 5996-00-919-0570
NSN 5930-01-577-2160
NSN 7035-01-023-7859