9/16" X 7/16" Pilots for Counterbore Shopify Collective ANSI IMPACT RATING:1

ANSI IMPACT RATING:1

Tap Size 1-1/2"-6

Part Number: BIT-DWDCO31/32

Height: 41-7/8"

Flute Length 10-3/8"

9/16" X 7/16" Pilots for Counterbore Shopify Collective ANSI IMPACT RATING:1Product 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