2-1/4" X 1/2" Pilot Hole HSS Straight Shank Counterbore Channable Exclude Part Number DWTSR1-1248

Part Number DWTSR1-1248

Part Number: BIT-KFDRSD3/8X1/2

Part Number DEWCSCBR1/4

Part Number DWTMR112-12X1

Length 7-7/8"

2-1/4" X 1/2" Pilot Hole HSS Straight Shank Counterbore Channable Exclude Part Number DWTSR1-1248Product 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