1-7/16" X 3/8" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Shank Size 1-1/2"

Shank Size 1-1/2"

Flute Length: 5-3/16"

Part Number ANC5-530-251

Part Number DWTST2-1/4-18P

and dowel pins

1-7/16" X 3/8" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Shank Size 1-1/2"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