Drill America DEWCBR23/32 23/32" X 1/4" Pilot Hole HSS Straight Shank Counterbore, DEWCBR23/32 Shop by Category > Hand Tools>Brushes Baum Tools B900-0059K Mercedes Ignition

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Drill America DEWCBR23/32 23/32" X 1/4" Pilot Hole HSS Straight Shank Counterbore, DEWCBR23/32 Shop by Category > Hand Tools>Brushes Baum Tools B900-0059K Mercedes IgnitionDrill America DEWCBR23 32 23 32" X 1 4" Pilot Hole HSS Straight Shank Counterbore, DEWCBR23 32 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