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 6110-01-180-7590
NSN 5985-01-177-3197
NSN 7035-01-463-3368
NSN 5975-01-378-6917
NSN 6320-01-021-6633
NSN 5855-01-518-5278
NSN 5985-01-285-4399
NSN 5925-01-224-1758
NSN 5998-00-657-4760
NSN 2925-01-368-5773
NSN 5960-01-267-6139
NSN 5985-01-609-4065