Aaluminum alloy, qq-a-225/6 comp 2024 temper t4, anodized, mil-a-8625 type 2, blue painted finish; 0.249 in. Min, 0.251 in. Max o/a lg; shouldered along lg, 0.125 in. Nom od 1st step 1stend, 0.124 in. Min, 0.126 in. Max lg 1st step 1st end, 1 no. 59 drilled hole through body, 0.046 in. Nom distance from hole center to 1st end; 0.0930 in. Min, 0.0938 in. Max od 1st step 2nd end, 0.125 in. Nom lg 1st step 2nd end; 45 degrees angle by 0.005 in. Lg chamfer both ends