3" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: 87C325HSBA325G/PT

Part Number: 87C325HSBA325G/PT

Part Number DEWMSK5/8-60

Part Number: BIT-DWDRSD1/2

874 Pieces

Part Number DWRR44

3" X 1/2" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: 87C325HSBA325G/PTProduct 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