Choose the Drill America - 11/16-30 UNS HSS Taper Tap for unmatched reliability and performance
Drill America - 1-28 UNS HSS Tap Set
Get the Drill America - 2-1/8-16 UNS HSS Bottoming Tap and experience the perfect combination of performance and protection for your professional needs
Get the Drill America - 1-3/8-27 UNS HSS Tap Set and experience the perfect combination of performance and protection for your professional needs
Get the Drill America - 5/16-20 UNS HSS Bottoming Tap and experience the perfect combination of performance and protection for your professional needs
1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank - High Performance & Durable Cutting Tool | Drill America Welding Supplies 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