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 6130-01-225-1846
NSN 5975-00-222-4109
NSN 5950-01-228-7432
NSN 6105-00-085-5713
NSN 6220-01-547-3058
NSN 5855-01-306-3809
NSN 5915-01-233-9651
NSN 5996-00-004-4643
NSN 5935-01-281-6168
NSN 5910-00-565-0028
NSN 6240-01-155-2959
NSN 6610-01-282-3225