Overview
Built for the job.
3M™ Weld-Thru II is a convenient aerosol coating designed to prevent corrosion between welded metal surfaces. Featuring a zinc base that draws corrosion away from bare metals, it helps prevent costly comebacks due to corrosion at welds. Spray coating applies fast, resists weld spatter common to some weldable primers…
3M 05917 Weld-Through II Coating is a high-performance gray primer designed for weld-through applications on automotive body panels. It provides corrosion protection and adhesion promotion for subsequent coating systems, making it suitable for repairing bare metal, plastic, or previously primed surfaces.
The formulation offers 528 sq-ft coverage per 12.75 oz can at a recommended 3-4 coats, delivering consistent film thickness across complex geometries. With a VOC content of 13.2 lb/gal, the coating balances environmental compliance and drying efficiency. It is compatible with a range of substrates including bare metal, plastic, and existing primer layers.
Safety precautions are critical: the product carries a "Danger" signal word and includes acute toxicity, carcinogenicity, and flammability hazards. Use appropriate eye protection, protective clothing, and a respirator in well-ventilated areas. The flash point is 104.4 °C (Pensky-Marten), and relevant H-statements are H223, H319, H351, H370, H371, and H373.
Why Pros Choose 3M MMM
- Protects bare metal panels and parts from corrosion after welding
- Zinc base draws away contact corrosion, leaving substrates strong
- Convenient aerosol spray application
- Dries in as little as 5 min before MIG welding for efficient throughput
- Formulated for minimum weld spatter, helping prevent shop damage
Application Guide
- Clean the substrate (bare metal, plastic, or primed surface) to remove oil, grease, rust, and loose material; ensure a dry, contaminant-free surface.
- Apply 3 - 4 coats of Weld-Through II coating with the recommended spray equipment. Allow each coat to flash/dry as specified by the manufacturer before applying the next coat.
Compatibility
Compatible substrates: Bare Metal.
Specifications
| Part No. | 5917 |
|---|---|
| Product Line | MMM |
| MFR Model | 05917 |
| Standard/Approvals | ASTM B117 | California PROP65 Warning: Cancer |
| Manufacturer | 3M Products |
| Alternate Part Number-1 | 60980107779 |
| UPC | 051131059177 |
| Brand | 3M™ |
| Maximum Sale Quantity | 6 |
| Maximum Sale Day | 7 |
| Color | Gray |
| Container Size (oz) | 12.75 |
| Coverage (sq-ft) | 528 |
- VOC
- 13.2 lb/gal
- Compatible Substrates
- bare metal, plastic, primer
- Number of Coats
- 3-4
- Coverage
- 528 sq-ft (12.75 oz)
About 3M
3M is a global leader in abrasives, masking, and body repair products. Trusted by OEM collision centers for high-performance prep and finishing solutions.
Frequently Asked Questions
What substrates can I apply 3M 05917 Weld-Through II Coating to?
The coating is compatible with bare metal, plastic, and primer-treated surfaces.
How many coats are required for proper protection?
Apply 3-4 coats to achieve the specified performance.
What is the coverage rate for this product?
A 12.75 oz can cover approximately 528 sq-ft when applied at the recommended thickness (total across all coats).
What personal protective equipment is required when using this coating?
Use eye protection, protective clothing, and a respirator as indicated on the SDS.
Are there any fire or health hazards I should be aware of?
The product has a flash point of 104.4 °C and carries a "Danger" signal word. It is classified for acute toxicity, aquatic toxicity, aspiration hazard, carcinogenicity, eye damage, flammability, organ toxicity, reproductive toxicity, and skin corrosion (H223, H319, H351, H370, H371, H373).
Documents & Safety
Signal Word: Danger
Required PPE: Eye protection, protective clothing, and respirator. This product is flammable and contains materials that may cause eye damage, skin irritation, and serious health effects including potential cancer risk and organ damage with prolonged exposure. Use only in well-ventilated areas and avoid inhalation of dust or mist. Always refer to the full SDS before use.
Required PPE: Eye protection, protective clothing, and respirator. This product is flammable and contains materials that may cause eye damage, skin irritation, and serious health effects including potential cancer risk and organ damage with prolonged exposure. Use only in well-ventilated areas and avoid inhalation of dust or mist. Always refer to the full SDS before use.
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.
Specifications
Full data
Frequently asked
Good to know
3M Products MMM is compatible with Bare Metal. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
This listing ships 3M Products MMM in a 12.75 (CN) container. Check the autofxmart catalog for other sizes and bulk pricing.
Most in-stock orders for 3M Products MMM ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Yes. autofxmart is an authorized distributor of 3M Products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
The MPN for 3M Products MMM is 5917. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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