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 7035-01-435-4009
NSN 5920-01-065-0395
NSN 5998-00-633-5169
NSN 5835-01-281-7281
NSN 6320-00-857-4073
NSN 2925-01-148-4533
NSN 5998-00-800-6769
NSN 6685-01-630-5459
NSN 5915-00-817-8314
NSN 5965-00-852-6258
NSN 5950-01-349-5123
NSN 7035-00-055-9778