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 5975-00-522-5566
NSN 6650-01-252-8190
NSN 5935-01-468-6032
NSN 6110-00-238-9636
NSN 5998-01-516-0222
NSN 5930-00-723-8021
NSN 6685-00-126-2466
NSN 5920-01-301-3837
NSN 5920-01-267-2795
NSN 5930-01-626-0804
NSN 6320-00-331-7138
NSN 5960-00-529-2704