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 6220-00-503-2831
NSN 5960-01-054-3752
NSN 5965-01-079-7939
NSN 5998-01-044-5169
NSN 5925-01-023-9116
NSN 5895-01-093-0591
NSN 6150-01-412-0606
NSN 6685-01-374-0837
NSN 5925-00-619-3652
NSN 2925-00-878-2196
NSN 6645-01-573-7603
NSN 6105-01-382-9690