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1/2" X 1/8" HSS Aircraft Counterbore 1/4" Shank - High Performance & Durable Cutting Tool | Drill AmericaCounterboring 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

Fabrication and Manufacturing: Perfect for metal fabrication

ensuring clean and efficient gas flow

Choose the Drill America - 5/16-32 UNS HSS Bottoming Tap for unmatched reliability and performance

Choose the Drill America - 1-3/16-18 UNS HSS Taper Tap for unmatched reliability and performance

Thread Size: m24

Get the Drill America - 1-1/4-28 UNS HSS Taper Tap and experience the perfect combination of performance and protection for your professional needs

Flute Length: 18"

Overall Length: 1-3/4"

Thread Size: 3-7/8"

Drill America - 1-16 UNS HSS Bottoming Tap

Killer Force Drills (KFD) have a heavy duty 135 split point for self-centering and reducing thrust

Why Choose Drill America - 3/8-32 UNS HSS Bottoming Tap