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 5985-01-495-3151
NSN 6135-00-112-8637
NSN 5835-00-438-4489
NSN 5915-01-440-2794
NSN 2925-01-552-7151
NSN 5950-01-550-6508
NSN 5910-01-192-1848
NSN 6105-00-127-2993
NSN 2925-00-707-6770
NSN 5965-00-842-9060
NSN 5920-01-481-3400
NSN 2925-01-354-1752