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 6240-01-451-1409
NSN 5930-01-294-8834
NSN 6620-01-473-8262
NSN 5855-01-594-7809
NSN 4140-00-594-4452
NSN 6650-01-525-0958
NSN 5965-00-393-1294
NSN 6240-01-348-8975
NSN 5905-01-137-0109
NSN 5996-01-024-7826
NSN 6130-01-158-9437
NSN 2925-00-315-8442