9/16" X 3/8" Pilots for Counterbore BoltsandNuts.com and 3/4 inch drive impact
Description
and 3/4 inch drive impact reducers
Part Number T/A54741
Size 7/16"-40
Size 2-11/16"
This set includes 1/4
9/16" X 3/8" Pilots for Counterbore BoltsandNuts.com and 3/4 inch drive impactProduct 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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