The MK Products Spool Gun Adapter for Thermal Arc Fabricator 250 (005-0689) is a purpose-built adapter cable that allows MK Products spool guns to connect and operate correctly on the Thermal Arc Fabricator 250 welder. If you have a Thermal Arc Fabricator 250 and want to add MK Products spool gun aluminum welding capability, the 005-0689 is the correct interface solution.
| Model | Spool Gun Adapter — Thermal Arc Fabricator 250 |
|---|---|
| Part Number | 005-0689 |
| Compatibility (Welder Side) | Thermal Arc Fabricator 250 |
| Compatibility (Gun Side) | MK Products spool guns (Prince XL, Cobra, and related models) |
| Connector Type | Adapter — bridges Thermal Arc Fabricator 250 connector to MK Products spool gun connector |
| Vendor | MK Products |
| Type | Spool gun control adapter cable |
- Adding MK Products spool gun capability to a Thermal Arc Fabricator 250: The Thermal Arc Fabricator 250 is a popular multi-process welder found in fabrication shops and educational settings. The 005-0689 unlocks aluminum wire MIG welding on this machine by allowing an MK Products spool gun to connect and trigger correctly.
- Aluminum wire welding on Thermal Arc machines: Shops that primarily weld steel but occasionally need aluminum capability benefit from this adapter — no new welder required, just the right spool gun and adapter.
- Standardizing on MK Products spool guns across mixed-brand shops: Facilities that own Thermal Arc and other brand welders can use MK Products spool guns across all their machines with the appropriate MK adapter per machine — maintaining one gun platform rather than multiple brand-specific guns.
- Spare or replacement adapter: A spare 005-0689 ensures that a failed adapter does not take a spool gun welding station offline during production.
The MK Products 005-0689 is designed specifically for the Thermal Arc Fabricator 250 welder. It adapts the Fabricator 250’s spool gun control port to the MK Products spool gun connector, allowing the gun trigger, wire feed speed control, and shielding gas functions to operate through the MK Products gun.
On the gun side, the 005-0689 is compatible with MK Products spool guns including the Prince XL and Cobra families. If you are pairing a different spool gun brand with a Thermal Arc Fabricator 250, this adapter is not the correct part — contact WeldingMart for guidance.
MK Products makes adapters for several other welder brands, including the 005-0261 for Miller welders. Browse our complete spool gun and adapter lineup in the Spool Guns collection.
WeldingMart is an authorized MK Products dealer carrying the full range of MK Products spool gun adapters, including both the 005-0689 (Thermal Arc Fabricator 250) and the 005-0261 (Miller). MK Products builds their accessories in the United States and is trusted by professional welders for fit, function, and durability. Our staff can confirm the right adapter and gun pairing for your specific Thermal Arc machine — reach out before you order to make sure you get exactly what you need.