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 5960-01-658-9538
NSN 6320-00-312-7348
NSN 5855-01-351-8909
NSN 5960-01-240-3266
NSN 5975-01-525-8299
NSN 5835-00-233-6327
NSN 5855-00-962-5792
NSN 6130-00-868-3086
NSN 5960-01-169-1372
NSN 5998-01-026-1453
NSN 6645-01-063-8243
NSN 5920-01-417-3142