TCI Precision Metals’ Standard Machine-Ready Blanks ™ are pre-configured in hundreds of dimension/alloy combinations. Each precision Standard Blank arrives square, flat and parallel within ± .002” of specified dimensions all around, ready to load directly into your machining centers. Standard Machine-Ready Blanks are available in a wide range of materials and sizes with quick delivery for short and long runs. The 6061 aluminum sheet with T651 temper meets American Society for Testing and Materials International ASTM B209 standards and has been ground to a precision tolerance. The 6061 aluminum alloy is a general-purpose material that combines good corrosion resistance, strength, machinability, and weld ability. It resists stress corrosion cracking and is heat treatable. The aluminum has a T651 temper, meaning it has been heat treated for increased strength. Aluminum and aluminum alloys are lightweight compared to steel, brass, and copper, and have high strength-to-weight ratios. Size & Other Details: .625 X 24.000 X 24.000; Product is precision ground on thickness +/-. 002". Length and width are milled to +/-. 002". Meets specifications: AMS QQ-A-250/11, ASTM B209