3M
3M 33449 Cubitron II 786F Series 36+ Grit 3/4 in x 20-1/2 in File Belt
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Overview
Built for the job.
Our 3M™ Cubitron™ II file belts 786F is a 3M™ best in class abrasive belt, designed for use with the 3M™ file belt sander, for tasks like grinding out rivets and removing spot welds. 3M™ precision shaped grain is resin bonded on a heavy-duty backing for a more consistent finish, cooler operation and 2X more belt life.…
Why Pros Choose 3M MMM
- Features 3M™ tough and best in class Cubitron™ II mineral
- Grains of ceramic/aluminum oxide blend are precisely shaped, uniformly sized and vertically oriented
- Slices through hard metal for fast cut
- Cubitron™ II abrasives run cooler, reducing risk of metal discoloration/oxidation and heat related stress cracks
- A grinding aid further enhances cooler running on high strength steel
- Exceptionally long-lasting belt performs consistently and reliably throughout its life
- Used with the 3M™ file belt sander, easily grinds out rivets and spot welds
How to Use
For tough detail work like cleaning, deburring, blending and finishing as well as working in small confined spaces
Compatibility
Compatible substrates: Steel, Aluminum.
Specifications
| Part No. | 33449 |
|---|---|
| Product Line | MMM |
| MFR Model | 33449 |
| Application | For tough detail work like cleaning, deburring, blending and finishing as well as working in small confined spaces |
| Manufacturer | 3M Products |
| UPC | 051131334496 |
| Brand | Cubitron™ II |
| Belt Width (in) | 3/4 |
| Grit | 36+ |
| Belt Length (in) | 20-1/2 |
| Abrasive Material | Precision Shaped Ceramic |
| Wet/Dry | Dry |
| Series | 786F |
| Color | Purple |
| Backing Material | Polyester |
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 surfaces can 3M MMM be used on?
3M MMM is compatible with Steel, Aluminum. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
How fast does autofxmart ship 3M MMM?
In-stock orders for 3M MMM ship within 2 business days from our California warehouse, to the lower 48 states only. Standard ground delivery usually takes 2–8 business days after that. Freight-class items are quoted and scheduled separately.
Is this 3M product genuine?
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.
What is the manufacturer part number (MPN) for 3M MMM?
The MPN for 3M MMM is 33449. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
Documents & Safety
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — orders ship within 2 business days, lower 48 only.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.
Specifications
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