Description
12 HOLE REFERENCE STANDARD 4340 STEEL. HOLE SIZES: .156, .187, .199 ,.218, .250, .281, .312, .343, .375, .406, .437, .500, .030X.030 CORNER NOTCH, .050X.050 CORNER NOTCH (24 EDM NOTCHES TOTAL). Includes Test Report and Certificate of Conformance.