US$ 129.95
Length 17"
Thin and sleek
Size 1"-82
Part Number: BIT-DWDCO21/32
457 Pieces - Coarse & Fine Thread
7/8" X 1/2" Pilots for Counterbore Quantity:1 Length 17"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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