12 BOLT HOLES WITH CORNER AND SURFACE NOTCH REFERENCE STANDARD (Inch Version) 12 HOLE REFERENCE STANDARD. HOLE SIZES: 1/8", 5/32", 3/16", 7/32" 1/4", 5/16", 3/8", 7/16", 1/2", 9/16" 5/8", 3/4", 0.030" x 0.030" CORNER NOTCH 0.008", 0.020", 0.040" SURFACE NOTCHES. 0.005" +/-.001" DIMENSION: 6" (L) x 2.5" (W) x 0.25" (T) Holes SIZE: Ø1/8", 5/32", 3/16", 7/32" 1/4", 5/16", 3/8", 7/16", 1/2", 9/16" 5/8", 3/4" Surface Notches: Qty 3 @ 0.008", 0.020", and 0.040" deep x 0.750" long X 0.005" wide Hole Notch Configurations: 0.03" x 0.03" (45°) corner notch @ 0.005" wide in each hole NOTE: For special alloy request by mail.

12 BOLT HOLES WITH CORNER AND SURFACE NOTCH REFERENCE STANDARD (Metric Version) 12 HOLE REFERENCE STANDARD. HOLE SIZES: Ø3.2mm, 4mm, 4.8mm, 5.56mm, 6.35mm, 7.94mm, 9.53mm, 11mm, 12.7mm, 14.3mm, 15.9mm and 19mm, 0.76mm X 0.76mm CORNER NOTCH 0.2mm, 0.5mm and 1mm SURFACE NOTCHES. 0.1mm +/-.001" DIMENSION: 150mm (L) x 63mm (W) x 6.35mm (T) Holes SIZE: Ø3.2mm, 4mm, 4.8mm, 5.56mm, 6.35mm, 7.94mm, 9.53mm, 11mm, 12.7mm, 14.3mm, 15.9mm and 19mm Surface Notches: Qty 3 @ 0.2mm, 0.5mm and 1mm deep x 19mm long X 0.12mm wide Hole Notch Configurations: 0.76mm X 0.76mm (45°) corner notch @ 0.12mm wide in each hole NOTE: For special alloy request by mail.