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 5960-00-636-1712
NSN 5999-01-268-4267
NSN 5945-01-003-7294
NSN 5990-01-352-5255
NSN 6135-01-370-2599
NSN 6685-01-290-8295
NSN 5999-00-172-7051
NSN 6645-01-584-0892
NSN 4140-01-358-7889
NSN 6240-01-391-6027
NSN 5915-00-870-4654
NSN 5999-01-341-6563