1-1/4" X 3/8" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Part Number: EZ-303-7

Part Number: EZ-303-7

Part Number ANC5-530-383

Body Diameter 1"

Part Number DWDTS51/64

1-1/4" X 3/8" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Part Number: EZ-303-7Product 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