1/4" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Fixture Time: 10-20 Minutes

Fixture Time: 10-20 Minutes

Part Number: BIT-SDS1212

Part Number: M20C50ASB12BO

Part Number DWT1/2-10ACME

Size 3-7/8"-8

1/4" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Fixture Time: 10-20 MinutesProduct 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