5/8" X 3/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Part Number DWDRSD22

Part Number DWDRSD22

Part Number GLBCOX63/8

Part Number DWRR9/64

About High Speed Steel Round Dies: For use in making new threads or re-threading existing threads

Part Number DWTMHX30X2

5/8" X 3/16" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Part Number DWDRSD22Product 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