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 6110-00-150-7844
NSN 6135-01-061-1862
NSN 5945-01-388-8281
NSN 5945-01-525-7779
NSN 5905-00-456-0389
NSN 5960-00-712-8243
NSN 6320-01-567-9792
NSN 5915-00-061-6675
NSN 5855-00-925-0114
NSN 6650-01-041-4979
NSN 5990-00-130-7293
NSN 5999-00-619-4566