19/32" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Diameter: Assortment #4 to 3/4"

Diameter: Assortment #4 to 3/4"

Part Number DEWSFC1-1/4-90

Part Number DWTH112-3816

Part Number DWDTS25/32-3MT

Size 1/2"-90

19/32" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Diameter: Assortment #4 to 3/4"Product 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