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9/16" X 3/16" Pilot Hole HSS Straight Shank Counterbore - High Performance & Durable Cutting Tool | Drill AmericaCounterboring 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 counterbore cutter, and a

Taper Length: 2

High Capacity: Capable of handling up to 25 tons (51

enhancing the quality of your welds and cuts

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Principal use is to file circular opening or concave surfaces

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Get the Drill America - 1-1/2-32 UNS HSS Bottoming Tap and experience the perfect combination of performance and protection for your professional needs

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