2-1/4" X 1/2" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number: BIT-DWTHSHEX1428

Part Number: BIT-DWTHSHEX1428

Part Number DWTT7/8-14

Prevailing Torque: 50 in/Lb

Part Number: BIT-D/ACO3/8X1/2

2-1/4" X 1/2" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number: BIT-DWTHSHEX1428Product 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