9steel, an-qq-s-685 comp 4130, chrome-plated qq-c-320 class 2, dim., 2.610 in. Nom od, 1.120 in. Nom id, 0.115 in. Nom thick, 120 degrees section removed from plate plus one 0.375 in. W strip parallel to the 30 degrees side, plate opening aligned vertically at 270 deg, three holes 0.256 in. Min, 0.263 in. Max diameter drilled through plate on 1.710 in. Bolt circle diameter located at 22.5, 105.0and 292.5 deg, max surfacefinish, faces of plate 125 microinches aa, id and od 250 microinches aa, used on release mechanism, external cargo hook
