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TSLOTS by Bonnell Aluminum logo

TSLOTS by Bonnell Aluminum are the leading T-slotted aluminum extrusions manufactured, distributed, and sold by an aluminum extruder with plants located in the USA with newly expanded operations in the Southeastern region of the United States. 

For the most consistent quality and widest range of T-slotted aluminum extrusion, you've found it!

TSLOTS and elliTek will work with your designs and offer free software options and concept assistance to help bring your aluminum extrusion project to life. In addition, there's no need to worry about painting your project, because TSLOTS offers customized extrusions for color and anodized finishes.

Whether you're designing frames for robots, clean rooms, enclosures, or whatever creative idea you have in mind, you can be confident that TSLOTS will be easy to assemble. TSLOTS are lightweight, durable, and prefinished in any color preference.

High-strength TSLOTS are maintenance-free, with a clear anodized finish that's resistant to scratches and corrosion and never needs painting.

TSLOTS are designed so that all you need are a few simple hand tools to create a durable, strong, yet lightweight structure that's both functional, attractive, and maintenance-free.

TSLOTS offers a comprehensive selection of extruded aluminum to fit nearly any project. Please take a look around to check out TSLOTS offerings. Keep in mind that elliTek has firsthand experience with TSLOTS and is here to help when needed.

TSLOTS Extrusions

​For both small and large applications, TSLOTS extrusion line has you covered.


Three main extrusion series are offered by TSLOTS.  Fractional extrusion consists of 10 Series and 15 Series. Metric extrusions include 20 Series and 40 Series. The B-Series includes 20, 30, and 45 Series that are compatible with Bosch Extrusions.

TSLOTS Fractional line


TSLOTS Fractional

TSLOTS fractional line is fully compatible with products from other competitors. Offering 10-Series & 15-Series TSLOTS and all the brackets, fasteners, hardware, hinges, and stanchions needed to complete a customized project.

TSLOTS Metric Series



TSLOTS Metric Series blends the look and functionality of fractional TSLOTS with the convenience of metric dimensions that create compatibility with European framing systems. TSLOTS offers a wide range of components and fasteners that fit the Metric Series.




TSLOTS B-Series product line is fully compatible with Bosch's product line. Slot widths range from 6mm to 10mm. The B-Series integrates some unique fastening methods - while also overlapping with the fastening methods and components in TSLOTS Fractional Series.


TSLOTS Brackets, Gussets, & Plates

TSLOTS manufactures all of its connecting brackets, gussets, and plates.

You can customize your project the way you want due to the wide variety of options. NO welding or machining is needed. Just cut the TSLOTS to the length needed and fasten the extrusions using bolts through the holes in these brackets.

View the slide show to see a sampling of TSLOTS Brackets, Gussets, and Plate. Download the catalog to see TSLOTS' full product line.


TSLOTS Fasteners

TSLOTS extrusions are super-easy to assemble. Just insert a T-Nut and TSLOT fastener into a T-Slot and tighten. Yes, you read that right! You don't need to do any welding or grinding.


With TSLOTS fasteners, tightening is performed with simple hand tools. 

All Fractional and Metric extrusions have a 2-degree taper that spring-locks fasteners as you tighten them. They will not loosen even when subjected to extreme vibration.