Chuck Adapter, 1"-10 Thread 4" Diameter, 3 Holes

Name: Chuck Adapter, 1"-10 Thread 4" Diameter, 3 Holes
Brand: ABS Import Tools Inc.
SKU: 1917
Price: 26.77 USD
Availability: InStock
Rating: 4.8 (5 reviews)

Chuck Adapter, 1"-10 Thread 4" Diameter, 3 Holes - Main image

$26.77 ~~$39.95~~ In stock

This adapter is for a 4" 3-Jaw chuck such as LittleMachineShop.com PN 1698. NOTE: PN 1791 is the same adapter just without the 3 holes pre-drilled.

* These adapters require machining on the lathe on which they will be used. Instructions are included for final turning of the registration diameter on your lathe to ensure perfect concentricity.

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Customer Reviews (4.8 / 5 · 5 reviews)

Eva ★★★★★ Oct 22, 2026

The three pre-drilled holes made mounting this to my lathe faceplate quick and straightforward. I had to do a bit of cleanup turning to get a perfect fit on my 4-inch chuck, but everything mates up nicely now. Solid piece of steel for the price.

Emily S. ★★★★★ Oct 21, 2026

I’ve been using this 4-inch adapter with a 3-jaw chuck on my mini lathe, and the pre-drilled 3-hole pattern saved me a lot of setup time. The threads were clean and fit perfectly without any jiggle, so it feels sturdy during operation.

Lily V. ★★★★★ Oct 20, 2026

The threads on this adapter matched up perfectly with my 4" 3-jaw chuck, and the pre-drilled holes saved me a ton of setup time. It cleaned up nicely with just a light skim cut on the lathe.