1-5/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Reamers Note: Sizes under 11/64" are

Note: Sizes under 11/64" are sold carbide spade construction

Enhance your safety and performance with the Drill America - 1-5/16-12 UNS HSS Tap Set

Thread Size: m29

Size: m38 x 1

1-5/8" X 7/16" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Reamers Note: Sizes under 11/64" areCounterboring 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 counterbore cutter, and a