TechnicianVision · Knowledge base
Steel Spot And Plug Weld Nugget Size: FCA/Stellantis - UPDATE
I-CAR · November 6, 2019 · Alfa Romeo, Chrysler, Dodge, Fiat, Jeep, RAM
Summary
This article outlines FCA/Stellantis requirements for spot and plug weld nugget sizes, which are determined by the governing metal thickness (GMT) found in vehicle-specific body repair manuals. It also details guidelines for replacing suspected adhesive with structural adhesive when using Squeeze Type Resistance Spot Welding (STRSW) and specifies plug weld sizes based on panel stack-ups.
What to do on the job
Verify the governing metal thickness (GMT) in the vehicle-specific body repair manual to determine the minimum weld nugget diameter, and use 9.5 mm plug welds for structural stack-ups of 3 or more tiers (or 8 mm for exterior panels) when STRSW is inaccessible.
How to use it
Use this document to justify the necessity of specific weld sizes (8 mm for exterior plug welds and 9.5 mm for 3-tier structural stack-ups) and the required use of structural adhesive when performing STRSW. It also supports billing for the time required to research vehicle-specific GMT charts and perform destructive weld testing to verify nugget size.
This page is a summary written by TechnicianVision. The document itself belongs to its publisher — follow the link above to read it in full.
TechnicianVision puts procedures like this next to the repair order you are working on. Create a free account →