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 5990-01-270-3209
NSN 6135-01-151-2705
NSN 6620-01-348-6667
NSN 5905-01-352-1918
NSN 5950-00-399-1037
NSN 5965-01-168-8180
NSN 6650-01-314-9979
NSN 6240-01-527-0849
NSN 5996-01-626-9615
NSN 7035-01-271-1643
NSN 5990-01-568-5565
NSN 5855-00-560-0110