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 6105-00-127-5465
NSN 6145-01-016-0759
NSN 4140-01-234-8568
NSN 5835-01-152-9483
NSN 5910-01-452-1542
NSN 6150-00-179-0187
NSN 5985-01-629-9674
NSN 5996-01-268-1625
NSN 5960-01-599-9821
NSN 5895-01-211-4156
NSN 5960-01-490-7030
NSN 5950-00-035-8791