1-1/2" X 3/8" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number T/A57048TN

Part Number T/A57048TN

Part Number DIC04927

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

Part Number DWC5-530-183

1-1/2" X 3/8" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number T/A57048TNProduct 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