Description
12 HOLE REFERENCE STANDARD. MATERIAL: 4130 or 4340 CRES STEEL. Hole Sizes: (3/16″, 7/32″ ,1/4″, 9/32″, 5/16″,11/32″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 3/4″), .020″ X .004″ +/- .002″ WIDE THROUGH EDM NOTCH IN EACH HOLE and 3 SURFACE EDM NOTCHES .750″ LON…