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 5965-01-353-8722
NSN 5855-01-119-9575
NSN 6145-00-810-9470
NSN 6150-00-225-3835
NSN 5965-01-453-7504
NSN 5975-01-534-3769
NSN 6685-00-130-3947
NSN 5985-00-690-0966
NSN 5985-00-419-0342
NSN 5915-00-583-4970
NSN 6320-00-164-4087
NSN 7035-01-530-4374