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 5905-01-463-2642
NSN 6220-01-276-2102
NSN 5960-01-423-1085
NSN 5855-01-006-1827
NSN 5930-01-484-5315
NSN 5895-01-155-3021
NSN 5835-00-170-5238
NSN 5895-00-156-4531
NSN 5905-00-247-9017
NSN 7035-00-908-4933
NSN 6145-00-422-7146
NSN 6650-00-862-7143