"ALUMINUM BAR STOCK PER QQ-A-225/6; ALLOY 2024 OR 6061 OR 7075 ANY HEAT TREAT EXCEPT-O OR ALUMINUM PLATE STOCK PER QQ-A-250/4, ALLOY 2024 OR 6061 OR 7075 ANY HEAT TREAT EXCEPT -0. FINISH NOTES: ANODIZE PER MIL-A-8625 TYPE II. CLASS 2 COLOR NUMBER 15095 PER FED-STD-595 (BLUE)."