Tube adapters and inserts act as the essential structural “anchors” used to convert plain, hollow tubing into functional, threaded linkage arms. They provide the necessary solid material base to securely accept rod ends and other threaded hardware into thin-walled structural members.
Since structural tubing walls are too thin to tap directly, these inserts provide the necessary precision internal threads to transform a raw tube into a component ready for assembly hardware.
Engineered with substantial wall thickness, they offer deep thread engagement to withstand massive axial tension and compression loads without stripping out under stress.
They are the fundamental building blocks for fabricators creating custom-length control arms and steering links, requiring only simple welding to become an integral part of the tube.
By installing adapters with opposing thread directions (Left-Hand and Right-Hand) on either end of a tube, they allow for easy on-vehicle length tuning without disconnecting the linkage.
Once welded into the tube end (often with additional plug welds for redundancy), they ensure a continuous, rigid load path from the rod end through to the main tube body.
Made from premium 4130 chromoly or weld-friendly low-carbon steel, these inserts offer outstanding weld penetration to ensure they fuse seamlessly with the tube—no cracking or separation.
CNC-machined with strict OD tolerances, each insert slides perfectly into DOM or chromoly tubing with no grinding required, providing a clean and reliable foundation for welding.
Available in both round and hex designs. The hex style is especially popular, allowing easy wrench adjustment when fine-tuning link lengths—ideal for fabrication shops.
Threads are checked with go/no-go gauges to ensure smooth engagement with rod ends. No sticking, no looseness, and no risk of thread stripping during assembly.
We offer standard sizes for common wall thicknesses such as .120″, .188″, and .250″, compatible with most DOM and chromoly tubing.
If you’re welding into chromoly tubing, choose 4130 and TIG-weld it. For regular DOM tubes, standard mild-steel inserts are more than sufficient.
To prevent thread distortion, we recommend threading in an old rod end or bolt during welding to act as a heat sink.
Yes. All sizes are available in both left-hand (LH) and right-hand (RH) threads, allowing you to build fully adjustable suspension links.
Our inserts are designed with optimal insertion depth to maximize weld surface area, ensuring superior strength once assembled.
We accept T/T, PayPal (for samples), and L/C for large orders. For new customers, 30% deposit and 70% before shipment is standard.
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