31/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: EZ-SK50815

Part Number: EZ-SK50815

Part Number: BIT-DWDRSD7/16

Size 1-19/32"

Part Number: BIT-DWDRSD3/8X7/16

or taking on-the-go

31/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: EZ-SK50815Product 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