1/2" X 3/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Flute Length 5-3/8"

Flute Length 5-3/8"

Part Number: Assortment Kit #168

Part Number DWCF351A

BoltsandNuts

Drilling/Exploration

1/2" X 3/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Flute Length 5-3/8"Product 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