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 6685-01-502-2399
NSN 5935-01-279-4869
NSN 6610-01-247-6374
NSN 6220-01-361-9295
NSN 6320-00-082-5868
NSN 5910-01-200-1668
NSN 6110-00-477-8372
NSN 5920-01-220-3037
NSN 6105-01-254-2722
NSN 7035-01-352-6235
NSN 6220-01-102-9027
NSN 5905-01-346-2383