Steel, cres mil-s-6721 comp t1, passivated fw4007 bell helicopter co., shape, cylinder welded to circular plate, dim., 0.780 in. Nom o/a lg, 0.748 in. Nom od lg, 1.370 in. Nom od, 1.306 in. Nom id, 2.750 in. Nom flange od, 0.032 in. Nom flange w, four bolt holes0.208 in. Min, 0.214 in. Max diameter equally spaced on 2.150 in. Bolt hole circle with 1.520 in. Center to centerdistance
