Two parts mounted on common axis so as to permit a relative rotation between the parts. One part has a round or oval opening and the other is u-shaped and has a pin or bolt across the open legs.
NSN 2925-01-551-5375
NSN 4140-01-218-5919
NSN 5910-01-441-2301
NSN 5999-01-143-1136
NSN 6150-00-252-0806
NSN 4140-00-753-1416
NSN 2925-01-254-3068
NSN 4140-01-602-7656
NSN 5935-00-394-9903
NSN 6320-01-117-5516
NSN 6620-01-312-9113
NSN 5905-01-268-1922