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 6320-01-631-7828
NSN 5915-01-178-0238
NSN 6610-01-071-4097
NSN 7035-01-245-9585
NSN 5895-01-056-4548
NSN 5895-00-912-4745
NSN 6320-01-092-4101
NSN 5985-00-016-0410
NSN 6645-01-623-4199
NSN 5930-01-380-8293
NSN 5950-00-492-8447
NSN 6240-00-222-0276