2-1/2" X 1/2" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Number of Pins12

Number of Pins12

Length: 1/2"

Part Number DWTSMR1316-4X

Shoulder Length: 1/2"

Part Number DWTSH3-1/4-8

2-1/2" X 1/2" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Number of Pins12Product 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