1-5/8" X 7/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: BIT-DULSA3

Part Number: BIT-DULSA3

Part Number: BIT-T/A54760

Part Number: DUR229-95-21-IND

chrome-plated finish easily wipes clean and is highly resistant to corrosion • Includes a sturdy case with strong latches and clear

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1-5/8" X 7/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 Part Number: BIT-DULSA3Product 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