Bracket steel, qq-s-763, class 302, 2 holes spaced 1.000 in. Apart, length 2.000, guide steel, qq-s-763, class 302 outside diameter 0.730 in. Inside diameter 0.650; tube steel, mil-t-8808 ty i or ii, class 321, 3.000 length, 0.750 radius, width 0.800; used for manual oxygen release
