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 5965-01-579-0668
NSN 6610-00-099-4096
NSN 7035-00-616-4410
NSN 5975-01-621-2523
NSN 5996-01-364-0207
NSN 5965-00-594-3115
NSN 5945-00-035-9251
NSN 6645-01-221-3120
NSN 6240-00-931-6686
NSN 5930-00-156-0283
NSN 5965-01-131-4078
NSN 7035-01-145-5059