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.

Insize 6140, DEPTH BASE ATTACHMENT, suitable for calipers with beam width (w) .630", 6928640303579
3M 27199, Foil Repair Tape 3311-10D, 2.0 in x 10 yd (50.8 mm x 9,1 m), 7100198304
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 15041, Scotch Electrical Shielding Tape 24, 1 in x 15 ft (25 mm x 4,6 m), 7000031348
3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
Dynabrade 51332 .7 hp Router, 3-1/2" Base, Central Vacuum, 20,000 RPM, 1/4 Collet
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
Dynabrade 15003 Mini-Dynafile II Abrasive Belt Tool
Dynabrade 92186 1" W x 30" L 60 Grit A/Z DynaCut Belt, 50/pack
3M 35124, Grippy Sanding Cloth Trial Kit, 7100230957
Standard Abrasives 707195, Aluminum Oxide Handy Roll, P80 J-weight, 2 in x 50 yd, 7100031626
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series with Brake, 30,000RPM, 33435
Norton 66254489957 Wheel, Vortex-7am, 6" X 1/2" X 1" C2312 Nor VTME7 PH VTC+, 4 Each
Dynabrade 77763 4-1/2" Dia. x 7/8" Center Hole, 60 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack
3M 37853, Dirt Trap Protection Material, Gray, 56 in x 300 ft, 7100132344
Dynabrade 51301 .5 hp Straight-Line Die Grinder
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Air Turbine Tools 310RDM - 1/4" Router Hand Tool Series, 40,000RPM, 33442
3M™ 07012, Supplied Air Hose W-9435-100/07012(AAD), 100 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005375, 1 EA/Case
3M 26016, PPS Series 2.0 Adapter, Type S9, 16 mm Male, 1.5 mm Thread, 7100135330
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093 
