2-3/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Length 3-19/32"

Length 3-19/32"

Length 2-3/4"

Part Number: BIT-T/A54359

The end of the shank is flattened to form a broad surface that resists twisting inside the handle

Thread Standard NPS

2-3/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Length 3-19/32"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