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

Part Number D/ACTH

Part Number DWTSR1-3840

Part Number DWRRS15/16

Part Number: Assortment Kit #3841921 Pieces

Part Number DWDCO1-1/8

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