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 6610-01-057-7474
NSN 5930-00-758-8385
NSN 6320-00-382-7825
NSN 5915-01-157-9579
NSN 5950-01-093-2123
NSN 6320-01-384-3850
NSN 5975-01-440-9080
NSN 5895-00-893-6057
NSN 5960-01-063-6846
NSN 5999-00-942-9927
NSN 6685-01-567-9425
NSN 5990-00-284-0537