2-1/4" X 1/2" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Part Number DMODR

Part Number DMODR

Part Number: 37C250ASBSS

Drill Bit Size: 13/16"

Part Number: BIT-DWDRSD1-23/64

Part Number DWTSR112-3424

2-1/4" X 1/2" Pilot Hole HSS Taper Shank Counterbore Quantity:1 Part Number DMODRProduct 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