"Material: Aluminum alloy, specification QQ-A-601; Dimensions: 7.2 square feet; Finish: Anodized per MIL-A-8625, sulfuric acid type 2; Color: Light yellow; Five holes with a diameter of 0.266 inches and a spotface diameter of 0.5 inches; Two holes through center sink, 90 degrees x 0.406 threads per inch, NPT; Two holes for depth, 110 degrees x 0.25 tap, 20-UNC-2B; Two bushings; One hole with a diameter of 0.25 inches for drainage; Four holes, 110 degrees x 0.203 taps, 10-24NC-2B; Ream through both bushings from 1.25 to 1.001 line ream; Eight holes with a diameter of 0.516 inches and 1 inch spotface."