Durable and Dependable
We engineer 3M Fibre Disc 381C by adhering aluminum oxide mineral to a fibre backing. The closed coat construction on 3M Fibre Disc 381C means mineral grains cover nearly 100% of the backing, so the abrasive is durable under pressure. The stiff fibre backing is extremely durable, withstanding wear, while standing up to tough applications like beveling.
Tips for Optimal Use
Altogether, fiber discs are durable abrasive discs that deliver a fast cut for grinding and weld removal, and they come in a range of sizes to correspond to large or small welds. Fiber discs also work well for blending (creating a smooth surface after weld removal) and provide a consistent finish over the workpiece. These discs may be used with portable tools, facilitating easier access with the workpiece. For optimal performance, the disc should be used with a face plate of the appropriate density for the application a lighter density face plate for finer grade applications and a harder density face plate for more coarse grinding applications. Using the correct face plate for the application ensures that the abrasive mineral will re-sharpen, maximizing the life of the abrasive.
Good for General Purpose Metalworking
When it comes to our 3M Fibre Disc product offerings, we recommend operators choose the performance level suited to their unique project needs. 3M Fibre Disc 381C offers an economical solution for a general purpose metalworking disc, because it can perform well on a variety of projects without sacrificing performance. Given its versatility, you’ll find the 3M Fibre Disc is applicable in many markets, as evidenced by its use in the marine and metalworking industries as well as in maintenance and repair operations. 3M Fibre Disc 381C is a great multi-purpose disc that’s good to have on hand.

Dynabrade 96173 Motor Tune-Up Kit
Dynabrade 51476 5"-8" Dia. Right-Angle Wet Rotary Sander, Basic, .7 HP, 0-3,100 RPM, 5/8"-11 Spindle Thread
Dynabrade 91125 3/4" W x 18" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 52301 Vacuum Shroud
Dynabrade 79368 5" Dia. x 400 Grit A/O Hook & Loop, Multi-Hole Vacuum Film-Backed DynaCut Disc, 100/Box
Dynabrade 52906 1/4" Drill, Central Vacuum, 3,600 RPM, 1/4" Chuck
Dynabrade 57503 Palm-Style Mini-Dynorbital Random Orbital Sander
Dynabrade 11080 Contact Wheel Ass'y, 1" Dia. x 3/8" W x 3/8" I.D., Round Radiused Face, 70 Duro Rubber
Dynabrade 32014 Filter Cage (for models 61204 and 614205)
Dynabrade 79799 6" 2500 Grit Dynasoft Finishing Film Non Vac Hook Face Disc, 25 per box
Dynabrade 59039 5" Dia. Central Vacuum Dynorbital-Spirit Random Orbital Sander, 3/32" Orbit
Dynabrade 57458 2-3/4" W x 8" L Non-Vacuum Dynaline Disc Pad, Vinyl-Face
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Dynabrade 40352 Dynafile II Abrasive Belt Tool
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Dynabrade 98271 1/2" NPT Male Plug
Dynabrade 78520 2" x 3/4", 1/4-20 Female Center Thread, 120 Grit, 8-Ply, Dynacut A/O Square Pad, 100/pack 
