Products for bench top machinists | LittleMachineShop.com

Insert, VCMT-221 Carbide

Insert, VCMT-221 Carbide - Main image
$12.21 $17.95 In stock

VCMT-221 carbide insert is a 35° diamond with a 7° relief. The center hole is a 40°-60° single countersink, and a single-sided chip breaker.


It has an inscribed circle (IC) of 0.25" (1/4"), a thickness of 0.125" (1/8"), and a corner (nose) radius of 0.0156" (1/64").


The insert is designated VCMT221 (ANSI) or VCMT110304 (ISO).

This high-quality insert is made in America by the Arthur R Warner company.


Inserts are sold individually—no need to buy a pack of 10 inserts.

*NOTE: Make sure you get the correct inserts and retaining screws for your indexable turning tools. Our chart of indexable inserts shows which inserts and which screw to use with each of our indexable tools.

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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)

Samuel ★★★★★

That countersink hole design seats perfectly on my holder without any wobble. Cuts through stainless steel bar stock like butter, and the 1/4" IC gives just enough rigidity for finishing passes.

Brian P. ★★★★★

Finally tried these with a stainless steel job and the 35° diamond geometry really helped reach tight corners. The chip breaker kept everything under control, no stringy mess.

Ellie U. ★★★★★

Used these for my last batch of turning, and the 35° diamond shape really digs into the material cleanly. The single-sided chip breaker kept the shavings manageable, even at moderate speeds. Solid performance for the price.