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 5945-00-796-7225
NSN 5915-01-394-5335
NSN 6650-00-252-6271
NSN 5925-01-343-9761
NSN 5905-01-286-6851
NSN 6145-01-359-8028
NSN 5930-01-642-4550
NSN 5998-00-007-0059
NSN 6145-00-607-8810
NSN 5985-01-303-6574
NSN 5996-01-065-5614
NSN 5999-00-104-3502