47/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Part Number DWTHSHEX11212

Part Number DWTHSHEX11212

Internal Diameter: 1/2"-13

Part Number: 100C800HSBA325PL/PT

Part Number: M20C120ASB12BO

Part Number DWRRQ

47/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Part Number DWTHSHEX11212Product Description Counterboring is the enlargement of a portion of a hole that has previously been formed. If the counterbored portion is shallow (1 8" or less), the operations is usually known as spot facing; for example, a flat seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two piece construction, having an integral shank and