Two u-shaped parts mounted on a common axis so as to permit relative rotation between the parts. The u-shaped parts have a pin or a bolt across the open legs.
NSN 6135-01-506-4791
NSN 6145-01-499-7795
NSN 6105-01-058-9918
NSN 5999-01-506-3479
NSN 5996-01-136-5156
NSN 4140-01-643-9910
NSN 5930-01-259-0914
NSN 5930-01-450-0983
NSN 5915-01-570-6771
NSN 6685-01-608-8262
NSN 6685-01-416-6053
NSN 6645-01-616-5820