7/8" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Pilot Diameter #21

Pilot Diameter #21

Stamped Markings – Markings are permanently impressed into the material by a roll-stamp die and are clearly visible because of their extra-deep outline • Secure Drive Tool Engagement – Detent grooves and beveled edges provide a smooth and secure connection with the drive tool • Carrying Case – Made from a high-density polyethylene material and withstands exposure to common lubricants

• Part of the L-BOXX Stacking Organization System – This module easily integrates with all other components in the L-BOXX family of products • Keep Small Parts Secure – The lid insert keeps foam contents in place during transport by pressing directly against them when the lid is closed

Part Number D/A3F13/16

Phillips bits: P000

7/8" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Pilot Diameter #21Product 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