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Ships within 48 hours · Estimated delivery Oct 7 - Oct 12
Length 6-1/16"
Part Number: 75C175HCSL9Y
Part Number GLBCOX129
Part Number: M12X60DPPOAPL
Part Number: BIT-T/A54765
43/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Length 6-1/16"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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