The MARC 1 A is a purpose-built nut welding system designed for one specific job: welding HexNut fasteners, M6 through M12, onto metal sheet (perforated or solid) quickly, cleanly, and with the kind of repeatability that production and assembly environments actually demand. It pairs the AM 12 A nut welding gun with the IT 1002 welding unit in a compact, IP 23-rated system that is equally at home in a fabrication workshop and on an assembly floor.
What makes the MARC 1 A practical is how straightforward it is to run. The nut welding gun handles length compensation and lift adjustment at the gun itself. Complete Stud Welding supplies the MARC 1 A as a complete system with all consumable equipment for M6, M8, M10, and M12 HexNut weld nuts.
The MARC 1 Nut Welding Gun and System offers advanced technology for efficient and precise welding of nuts onto various materials. Its user-friendly design ensures ease of operation, while built-in safety features enhance reliability. This versatile tool is ideal for both industrial applications and smaller projects, providing consistent, high-quality results.
The AM 12 A nut welding gun has 3 mm (0.12") of built-in length compensation, adjustable directly at the gun body without changing anything at the IT 1002 unit. When you switch between nut sizes or sheet thicknesses, you make the adjustment where the work happens.
Lift adjustment, the distance the gun draws the nut back before firing, has a 3 mm range with a lockable setting. Once you have the right lift dialed in for a given nut size and material combination, you lock it, and it stays there through the full production run. That consistency is what keeps weld quality repeatable from the first nut to the last.
Storey pressure on the MARC 1 A is adjustable up to 8000 N. Higher storey pressure drives better metallurgical contact between the weld nut and the base sheet, particularly on thicker material near the 3 mm upper limit or on surface-treated metal. Adjusting this at the gun without tools is a practical feature that fabricators appreciate when moving between different jobs.
The MARC 1 A is specified for both perforated and unperforated metal sheets. The bore diameter tolerances in the HexNut welding elements are designed around DIN EN ISO 4032, and the multi-cycle welding process handles the edge conditions around pre-punched holes without extra setup or fixturing.
The AM 12 A gun weighs 0.9 kg without cable, under 2 lbs. On a production line where an operator is placing dozens of weld nuts per shift, that weight matters. The 4 m cable gives enough reach across a standard workbench or welding fixture without getting in the way, and the IP 23 rating keeps the gun operational in workshop conditions without added protection or enclosures.
The IT 1002 is a well-established welding unit in the MARC nut welding machine system family. It runs multi-cycle stud welding reliably across the M6 to M12 HexNut range and handles the range of wall thicknesses the AM 12 A covers without requiring parameter changes beyond the gun-side adjustments. For shops that already run HBS-compatible equipment, the IT 1002 integrates cleanly into an existing setup.
Complete Stud Welding stocks the MARC 1 A nut welding system as a complete package, including AM 12 A nut welding gun, IT 1002 welding unit, control cable, and the full consumable equipment set for HexNut M6, M8, M10, and M12. Not sure if the MARC 1 A is the right fit for your nut size range or sheet thickness? We can walk through the full MARC system lineup with you and match the machine to the application.
