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 6685-01-531-5963
NSN 5920-01-043-4848
NSN 6685-01-346-2213
NSN 5996-01-417-3139
NSN 6620-00-770-9794
NSN 6150-01-391-5421
NSN 2925-01-269-1312
NSN 5965-00-518-0958
NSN 5935-01-080-7322
NSN 5998-01-222-0380
NSN 5965-01-085-6158
NSN 5920-00-454-4263