Choose the Drill America - 1-3/8-18 UNS HSS Taper Tap for unmatched reliability and performance
this tool will help you achieve professional results with ease
Why Choose Drill America - 1/4-30 UNS HSS Taper Tap
Versatile Sizes: Available in 1" and 1 1/4" to fit all major manufacturers' cage clamps
Reliable Performance: One-piece encapsulated seat design with an internal filter to protect the PTFE Teflon® seat from particulate contamination
21/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank - High Performance & Durable Cutting Tool | Drill America Hi Viz clothing & Safety Vest 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