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 6320-01-119-3935
NSN 5910-00-874-1048
NSN 6685-00-514-6364
NSN 5999-00-180-2477
NSN 6145-00-265-6190
NSN 4140-01-610-6953
NSN 7035-01-221-7856
NSN 5975-00-069-9324
NSN 6145-01-534-0390
NSN 6610-01-254-4196
NSN 5915-01-007-5716
NSN 6320-00-284-1524