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Heavy Wall Aluminum Tubing For CNC Machining

The ideal feed stock for CNC Machining and Automatic Screw Machining, our heavy wall round aluminum tubing is available cut to size for your production needs.

We stock 6063 alloy, which is the ideal material for an excellent anodized finish while also offering outstanding machinability. Testrite has been using 6063 alloy for automatic screw machining, lathe work, CNC turning, and more for decades since it anodized better than 6061 while still machining very well as a hollow.

Our heavy wall aluminum tube is available in sizes both thicker and thinner than .125" wall thickness, and in a wide range of outer diameters (ODs) to meet your specific requirements.

You can buy this aluminum bushing stock for a wide variety of applications, including precision spacers, bushings, standoffs, and machined components used in industrial equipment, fixtures, and custom assemblies. If your part should be CNC machined or automatic screw machined from a round hollow feed stock, then you're in the right place.

We stock this aluminum hollow rod in mill finish (raw aluminum). Our 6063-T5 aluminum heavy wall tubing is easy to cut, drill, tap, and machine, providing clean edges and dimensional stability for tight-tolerance work. Whether you’re making high-volume turned parts, prototypes, or custom components, this material is a cost-effective, versatile solution.

This aluminum bushing material is a perfect choice when you need the performance of a strong, lightweight, corrosion-resistant metal that can also be anodized or powder coated after machining.

Read our Frequently Asked Questions to learn more.

Frequently Asked Questions

What hollow aluminum material is ideal for automatic screw machining and CNC machining?
Heavy wall aluminum tubing in 6063 alloy is the ideal hollow material for automatic screw machining and CNC machining. 6063 is a very highly machinable alloy. One of the benefits of making parts in Aluminum is that they can be anodized, and 6063 is the best alloy for machining that also provides and excellent anodized finish. Anodizing is a high quality finish that doesn’t add material, unlike powder coating which adds thickness, critical for tight tolerance applications. Anodizing also offers a beautiful metallic finish that can’t be replicated any other way.
What's the best round aluminum feed stock for CNC machining and automatic screw machining?
The right feed stock varies by project. Starting with a solid rod as feed stock can mean drilling blind holes and excess machining time. By starting with a heavy wall round aluminum feed stock, you save time while also avoiding blind drilling issues. We offer a range of aluminum rods as well as aluminum heavy wall hollow shapes to suit both needs.
Can I buy CNC ready aluminum tubes cut to length?
Yes. These heavy wall aluminum tubes can be purchased cut to size, saving you time and material waste during setup for CNC lathing or automatic screw machining.
Are 6063 heavy wall tubes suitable for automatic screw machines and lathes?
Absolutely. Testrite has successfully machined this material in-house using lathes and automatic screw machines for decades—meaning you're getting a proven, production-ready feed stock for high-volume or precision machining applications.
What types of machining projects benefit most from heavy wall aluminum tubing?
Projects requiring precision-turned components—such as bushings, shafts, or machined fittings—benefit significantly. The heavy-wall construction holds tight tolerances better under load and during automated screw machining, improving consistency and quality.
Why should I choose Testrite for heavy wall tubing over other suppliers?
Testrite combines a wide range of ready-to-machine tube sizes, cut-to-size service, and demonstrated experience in CNC and screw-machine operations. We deliver high-quality heavy wall stock that’s proven in actual machining workflows.