Description
20 HOLE REFERENCE STANDARD 4340 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. TOTAL OF 20 SURFACE TO SURFACE( THROUGH) EDM NOTCHES .020″ x .005″ +/-.001″. Includes Test Report and Certificate of Conformance.