23/32" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Size 53/64"

Size 53/64"

Part Number: Assortment Kit #600212 Pieces

Part Number: BIT-DWDCO31/32

Steel Flat Washers Zinc Clear

Part Number: BIT-DULSM2

23/32" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Size 53/64"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