Disc
3M
3M Sanding Disc 31445 6-in Gold 400 Grit PSA Paper for blending paint and primer
No reviews yet
Authorized dealer
Ships today
30-day returns
Overview
Built for the job.
3M™ sanding abrasive discs make sanding easy and convenient; just press the disc on the pad and sand. The disc peels off easily when the job is done, making disc changes fast and convenient. Long-lasting, tough abrasive minerals resist loading for longer disc life and better performance. Premium discs work on a wide…
Why Pros Choose 3M MMM
- Cuts fast - combination of minerals and materials makes auto body sanding faster and easier
- Lasts longer - coarse aluminum oxide mineral lasts long
- Clog-resistant sheets - unique 3M mineral blend resists clogging and loading meaning less dust removal
- Super strong abrasive - 3M's minerals make a tough abrasive that self-fractures to expose new edges which allows for high durability
- Features durable yet flexible lightweight (A - weight) paper backing to conform to auto body surfaces
- Range of abrasive grits for each step of auto body repair
- Discs work with vinyl backup pads and dual action orbital sanders
How to Use
For blending and smoothing primer and paint
Compatibility
Compatible substrates: Aluminum, Fiberglass, SMC.
Specifications
| Part No. | 31445 |
|---|---|
| Product Line | MMM |
| Application | For blending and smoothing primer and paint |
| Manufacturer | 3M Products |
| Alternate Part Number-1 | 60455089353 |
| UPC | 0005113131445 |
| Brand | 3M™ |
| Grit | 400 |
| Disc Diameter (in) | 6 |
| Abrasive Material | Aluminum Oxide |
| Color | Gold |
| Backing Material | Paper |
| Attachment Type | PSA |
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 Aluminum, Fiberglass, SMC. 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?
Most in-stock orders for 3M 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.
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 31445. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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.
How to apply
Steps
1Pick the right grit for the stage of work.
2Mount on your sander or backing block.
3Work evenly and let the abrasive cut.
4Step through finer grits to refine.
5Blow off and wipe the surface before the next step.
Specifications
Full data
Frequently asked
Good to know
3M Products MMM is compatible with Aluminum, Fiberglass, SMC. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
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 31445. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
What Our Customers Say
Thanks! Your review was submitted and will appear after moderation.
No reviews yet — be the first to review this product.
