Collar with washer
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 5835-01-310-8979
NSN 6685-00-777-9565
NSN 6240-01-401-5340
NSN 5996-00-952-3452
NSN 5945-01-488-6256
NSN 5998-01-246-5025
NSN 5915-01-121-9096
NSN 5950-01-270-3722
NSN 6110-01-043-1796
NSN 5920-00-526-9238
NSN 5996-00-932-3796
NSN 5945-01-492-9460