Steel, qq-s-766, class 302 cond a; passivated, mil standard 171 finish 5.4.1; 0.700 in. Lg oo/a 0.700 in. W o/a; 0.250 in. H; 0.097 in. Material thk; 0.230 in. Tongue w; 0.210 in. Opening w; 0.360 in. Elongated hole opening lg; tongue position at 90.0 degrees angle