Color gray or color blue
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 5990-01-425-2175
NSN 6135-00-164-8780
NSN 6320-01-631-7828
NSN 5920-01-266-8919
NSN 5945-01-510-1660
NSN 6240-01-212-3255
NSN 6645-01-574-2818
NSN 5835-00-905-7165
NSN 6320-01-607-0347
NSN 6220-01-188-6962
NSN 5999-01-241-9874
NSN 5950-01-266-8880