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Ships within 48 hours · Estimated delivery Nov 17 - Nov 22
Part Number BRCT218
Part Number DWTB39X4
Part Number T/A57181TN
This set includes 1/2 inch drive 3
Length 6-9/16"
1-5/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore BoltsandNuts.com Part Number BRCT218Product 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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