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 5960-00-866-7543
NSN 6645-00-754-4108
NSN 5910-00-927-2970
NSN 5835-01-618-1225
NSN 5950-00-164-6413
NSN 6240-01-035-6076
NSN 5985-01-253-4288
NSN 5930-01-195-3780
NSN 5985-01-601-4751
NSN 5935-01-230-4153
NSN 5925-00-203-1278
NSN 6220-01-650-1897