7/8" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number: 56F550HCSSS

Part Number: 56F550HCSSS

• Sizes are marked both with a high-visibility laser marking and a permanent stamped marking that won't wear off • Deep 6-point socket openings provide an exact fit for hex fasteners • Radiused corners prevent fastener round-off by applying force to a fastener's flat sides

Part Number DEWCSK1-1/4-60

Part Number DWTSH5/16-27

Size 5/16"-82

7/8" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number: 56F550HCSSSProduct 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