7/8" X 1/2" Pilots for Counterbore Quantity:1 Part Number: DUR555-95

Part Number: DUR555-95

Part Number: EZ-303-5

3–19 mm flat end hex L-keys with holders and racks

Length: 30"

Cut Style Center Cutting

7/8" X 1/2" Pilots for Counterbore Quantity:1 Part Number: DUR555-95Product 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