1-13/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 ideal for keeping in a

ideal for keeping in a glove compartment

Part Number CTH3750

Length Under Head: 8-1/2"

Part Number: BIT-DWTHSHEX5811

Part Number: BIT-D/APJ

1-13/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 ideal for keeping in aProduct 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