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 5920-01-120-6992
NSN 6685-00-373-3436
NSN 6240-01-238-5374
NSN 6130-01-661-0210
NSN 5895-01-356-5418
NSN 5835-01-268-1924
NSN 6610-01-236-2510
NSN 5975-00-233-6301
NSN 6110-01-633-9660
NSN 5920-00-166-7877
NSN 5895-01-245-4983
NSN 6145-00-772-2955