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Home / Collision Repair News / Steel Spot And Plug Weld Nugget Size: Mercedes-Benz - UPDATE

Steel Spot And Plug Weld Nugget Size: Mercedes-Benz - UPDATE

Posted on 26 May 2021 | Share:
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Did you know that some OEMs specify nugget size for spot and plug welds? This information is typically found within vehicle-specific repair procedures or can be found under general welding guidelines. Let’s see what Mercedes-Benz has to say.

Spot Welding

Mercedes-Benz does not indicate a specific spot weld nugget size in their collision repair information.

Mercedes-Benz provides information on spot welding in the General Information On Body Repair document on their service information site. The document shows welding symbols used in repair procedures and states:

  • Welding tests are to be performed before repair.
  • Spot welds should be placed approximately 20 mm apart.
  • Multi-layer sheet metal with hardened adhesive must have squeeze-type resistance spot welds (STRSW) positioned on the original spot welds.

Mercedes-Benz Spot Welding Requirement/Recommendation

Mercedes-Benz does not indicate a spot welding vs. plug welding preference in their collision repair information.

Plug Welding

Mercedes-Benz does not indicate a specific plug weld nugget size in their collision repair information.

Plug weld information is only found in certain repair procedures. The procedures show where plug welds should be used and indicate that 5.5 mm holes are required.

Where the spot weld and plug weld nugget size was not identified, refer to the Steel Spot And Plug Weld Nugget Size: UPDATE article. This article provides general guidelines.

Follow OEM welding requirements, including what nugget size is required, to help ensure a complete, safe, and quality repair.

For additional Mercedes-Benz information, check out the Mercedes-Benz OEM Information page.

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