1" X 5/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Size: 3/16"

Size: 3/16"

Size: 15/64"

rather than its corners • Interior socket well extends far into the socket

Temperature: -60°F

Metal Working

1" X 5/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Size: 3/16"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