1-7/16" X 3/8" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number DWCA1628

Part Number DWCA1628

Part Number D/AN19/32

Part Number DWRRTPS6

Part Number DWC5-530-351

Color: Red

1-7/16" X 3/8" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number DWCA1628Product 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