1-1/2" X 3/8" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Recommended Predrill Hole Size: 7/8"

Recommended Predrill Hole Size: 7/8"

Part Number: 37C1200ROD2Z

Part Number DWTMR1316-5X

Part Number DWTSR2-7818

Part Number DWDTLCO19/64

1-1/2" X 3/8" Pilot Hole HSS Taper Shank Counterbore Shopify Collective Recommended Predrill Hole Size: 7/8"Product 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