3/16" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Drill Bit Size: #3

Drill Bit Size: #3

Part Number: M16X110DPAPL

Part Number DULSF7

Pilot Diameter 3/16"

Size 7/8"-90

3/16" X 3/32" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Drill Bit Size: #3Product 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