Used on mep-531a/501a 2kw generator sets. next higher assembly is diesel engine 2815-01-419-8704; army reference tm 9-6115-673-13&p, air force reference 35C2-3-512-1
Used on c-2a and e-2a; pad, flight controls with steel bearing. 1.500" outside diameter navy: pad assembly all 4 corners radius .312 inch cadmium surface treated four flats