1-13/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore - High Performance & Durable Cutting Tool | Drill America End Mills & Milling Cutters Choose the Drill America -

Choose the Drill America - 1-3/16-24 UNS HSS Bottoming Tap for unmatched reliability and performance

Why Choose Drill America - 3/8-27 UNS HSS Tap Set

6 cal/cm²)

Choose the Drill America - m20 X 2 Carbon Steel Tap Set for unmatched reliability and performance

Tap Size: m33 x 2

1-13/16" X 7/16" Pilot Hole HSS Straight Shank Counterbore - High Performance & Durable Cutting Tool | Drill America End Mills & Milling Cutters Choose the Drill America -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 counterbore cutter, and a