Products for bench top machinists | LittleMachineShop.com

Tool Bit, 1/4" HSS Internal Threading

Tool Bit, 1/4" HSS Internal Threading - Main image
$6.35 $8.95 In stock

This 1/4" square high speed steel tool bit is pre-sharpened for internal threading.

An internal threading lathe cutting bit is a tool used to create internal threads, or threads on the inside of a workpiece, in a lathe. It features a 60 degree cutting tip that is ground to a fine point and can reach up to 3/4" into a workpiece to create precise and accurate threads.

The cutting bit is made of high speed steel, a durable and heat-resistant material that allows for high speed cutting without dulling or wear.

The cutting bit is mounted in a holder and is used to cut away material as the lathe rotates the workpiece, creating a precise and accurate thread.

This internal threading lathe cutting bit is suitable for use in a wide range of materials, including steel, aluminum, and brass, and is able to create threads with a minimum bore size of 0.50". It is an essential tool for any manufacturing or repair operation that requires the creation of internal threads.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Adam D. ★★★★★

Used this for some 304 stainless and the pre-sharpened edge held up better than I expected. The 1/4" square shank fit perfectly in my tool holder with no wobble.

Ellie L. ★★★★★

Cutting internal threads on some stainless bushings went way smoother than I expected—the pre-sharpened edge held up through the whole batch. The 1/4" square shank seated solidly in my holder without any wobble, which saved me a ton of setup time.

Steven ★★★★★

Cut clean threads on the first pass with this pre-sharpened bit, saving me a lot of setup time. The 1/4" square shank fits my tool holder perfectly.