Description
12 HOLE REFERENCE STANDARD 1018 STEEL HOLE SIZES: .187″, .250″ ,.312″, .375″, .437″, .500″, .562″, .625″, .687″, .750″, AND 1.0″ ( .030X.030 CORNER NOTCH and 3 SURFACE NOTCHES .010″, .020″, .040″ DEEP x .750″ LONG.) 304 STAINLESS STEEL. Includes Test Report and Certificate of Conformance.