19/32" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 A detent pin hole on

A detent pin hole on one side of the drive end also supports engagement with detent pin anvil styles

Length 12-3/4"

Part Number T/A91612

Size 1/2"-90

Part Number DEWA0306

19/32" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 A detent pin hole onProduct 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