19/32" X 3/16" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number D/ACO3/8X5/8

Part Number D/ACO3/8X5/8

Size 1-1/4"-100

Part Number CTC5-530-257

Part Number: DUR735-95

Part Number DWTSMT6X1

19/32" X 3/16" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Part Number D/ACO3/8X5/8Product 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