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 5925-01-558-8593
NSN 5915-01-338-6431
NSN 5835-01-362-8367
NSN 5930-00-627-3700
NSN 5975-00-978-9078
NSN 5925-01-481-3184
NSN 5895-01-443-3463
NSN 5855-01-208-1471
NSN 6685-01-087-8560
NSN 6145-01-221-6518
NSN 6645-00-716-8049
NSN 5855-01-553-3368