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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
Flute Length: 2-3/8"
Thread Length 3/4"
Part Number: 100C800HSBA325PL/PT
Internal Diameter: 1/2"-13
47/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore BoltsandNuts.com Flute Length: 2-3/8"Product 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
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