Description
20 HOLE REFERENCE STANDARD 4130 CARBON STEEL. HOLE SIZES: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 9/16, 1/2, 17/32, 9/16,19/32, 5/8, 21/32, 11/16, 23/32, 3/4. TOTAL OF 20 CORNER EDM NOTCHES .030 x .030 x .005 +/-.001. Includes Test Report and Certificate of Conformance.