1-13/16" X 7/16" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America FR Gear Drill America - 1-7/8-5 UNS

Drill America - 1-7/8-5 UNS HSS Bottoming Tap

Size: 3/8"-120

Enhance your safety and performance with the Drill America - 1-1/8-18 UNS HSS Taper Tap

Why Choose Drill America - 1/8 x 2 x 7/8 Hole Concave Cutter

1-13/16" X 7/16" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America FR Gear Drill America - 1-7/8-5 UNSCounterboring 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