Aluminum 5086-h32; enamel olive drab; 3.13 in. Lg; 0.75 in. Thk; 0.875 in. W except tongue; 0.625 in. W by 1.00 lgtongue centered along length and chamfered 0.06 in. By 45 degrees 2 places alingthk; 2 through holes with insert ms51831-104 1.000 in. C to c; first hole 1.69in. From tongue