Premium Performance Tackles Carbon Steel Applications
Balance cost and output by selecting the abrasive with precisely the right amount of cut and life, no more and no less. 3M™ Fibre Disc 782C contains Precision Shaped Grain (PSG) to optimize the balance of speed and longevity for many of your carbon steel operations. Disc construction includes a stiff fiber backing and strong resin bond that provide durability and tear-resistance, which along with fast-cutting abrasive grain enables operators to complete more parts per disc and requires fewer disc changes.
The exceptional life and cut of our 782C Fibre Disc make it one of 3M’s best grinding discs for high production environments, providing significant gains over conventional fiber discs. When our highest-tier fiber disc may be under-utilized but productivity is still your bottom line, our 782C Fibre Disc delivers outstanding throughput. This fiber disc is an excellent choice for a range of applications such as:
- Edge chamfering
- Beveling
- Deburring
- Weld removal
Step Up Production with 3M Precision Shaped Grain
Developed for improved output on light to heavy stock removal, 3M Precision Shaped Grain lets operators finish tough tasks faster and with less fatigue. Because the grain wears evenly and stays sharp, PSG abrasives last significantly longer than their conventional ceramic counterparts, ensuring extended high performance in production applications.
To accomplish this level of performance, 3M engineers apply proprietary microreplication technology to create precise triangular structures of 3M™ Ceramic Abrasive Grain, and then electrostatically orient them on the backing to form sharp peaks. These ultra-sharp peaks slice cleanly through metal rather than gouging or “plowing” as conventional abrasives do, and continuously self-sharpen as the points break off.
Attachment Styles
To suit many different project needs, we offer these discs in a range of sizes and a variety of attachment styles. We offer 7/8″ center hole (CH) discs that require the use of a 3M disc pad face plate and 3M hub. This ensemble is attached to a right angle grinder with a disc retainer nut (all sold separately). Also available are GL and TN style discs with convenient built-in fasteners to provide reliable attachment to the tool and easy disc changes between applications. Smaller sized discs with quick change attachments are sold separately as 3M™ Roloc™ Fibre Disc 782C.
Tips for Optimal Use
Fiber discs are heavy-duty abrasives that feature a tough, stiff backing made from vulcanized fiber that resist wear and can handle tough grinding applications. 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 lighter weight grinding applications, and a harder density face plate for more heavyweight grinding applications. Using the correct face plate for the application ensures that the abrasive mineral will re-sharpen, maximizing the life of the abrasive.
3M Engineered for Peak Productivity
3M Abrasives engineers know abrasive construction. For more than 100 years 3M has been a leading abrasive supplier for the metalworking and woodworking industries, and we offer a complete line of high quality metalworking abrasive solutions to meet your tough jobs. Our 3M™ Fibre Disc 782C is designed to enable operators to take production to the next level by completing more work in less time. It is a prime example of how 3M science provides advanced solutions to help industrial businesses operate faster, better and more efficiently.

Insize 4807, ANGLE GAGE SET, 6928640319341
3M 26583, Accuspray Refill Pack for PPS Series 2.0, Green, 1.3 mm, 7100152953
3M 01253, Red Abrasive Stikit Disc Value Pack, 6 in, P220 grade, 7010308767, 25 discs per carton
3M 01708, Scotch-Brite SST Deburring Wheel, ST-WL, 8S Fine, 8 in x 2 in x 3 in, 7000144590
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 19770, Utility Cloth Sheet 314D, 9 in x 11 in P120 J-weight, 7000000358
ACS Diamond Cloth Belt, CX1250 3" X 30" 45U
3M 26612, Accuspray Atomizing Head Refill Pack for 3M PPS Series 2.0,Blue, 1.2 mm, 7100143442 (4 Nozzles/Kit)
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 20967, Portable Utility Cloth Roll 314D, P240 J-weight, 1 in x 20 yd, 7010290604
3M 10119, Synthetic Steel Wool Pad 10119NA, 0000 Super Fine, 7000126181
3M 03123, Pro Grade Precision Edge Detailing Dual Angle Sanding Sponge, 24302TRIP-XFDA, 2-7/8 in x 4.5 in x 1 in, X-Fine, 7100170066
Standard Abrasives 702568, Aluminum Oxide Spiral Band, 80, 1 in x 1 in, 7100138190
3M 26119, PPS Series 2.0 Adapter, Type S27, 16 mm Male, 1.5 mm Thread, 7100135925
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
Standard Abrasives 713276, Aluminum Oxide Handy Roll, P180 J-weight, 2 in x 50 yd, 7100037246
Standard Abrasives 863110, A/O Unitized Wheel, 631, 2 in x 1/4 in x 1/4 in, 7000144629
Dynabrade 93351 Carbide Burr 12-Piece Burr Kit, 1/8" Shank
Standard Abrasives 712731, A/O Full Taper Cartridge Roll, 1/2 in x 1-1/2 in x 1/8 in 100, 7100102809
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 26140, PPS Series 2.0 Adapter, Type S45, 1/4 Female, 19 Thread BSP, 7100135336
Standard Abrasives 707947, A/O Straight Cartridge Roll, 1/2 in x 1-1/2 in x 1/8 in 40, 7100085874
3M 65488, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH5100TRI-10T, 5 IN x UH, 100, 7100202881, 10 per pack
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
Dynabrade 52402 2" (51 mm) Dia. 7 Degree Offset Disc Sander, Front Exhaust, .5 HP, 20,000 RPM, 1/4"-20 Thread
3M 76429, Roloc Disc 361F, 36 YF-weight, TR, 4 in, Die R400BB, 7000148152
3M 28135, Hookit Clean Sanding Disc 900DZ, 6 in P100 J-weight, Die 500LG, 7010300153
Dynabrade 51632 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
3M 13180, Scotch-Brite Multi-Finishing Wheel, MU-WL, 2S Medium, 6 in x 3 in x 1 in, 7000148248
Dynabrade 77775 5" Dia. x 7/8" Center Hole, 120 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
Dynabrade 51700 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
3M 97421, Aluminum Foil Tape 3380, Silver, 72 mm x 45 m, 3.25 mil, 7010375681
3M 33440, Cubitron II File Belt, 33440, 80+, 10 mm x 330 mm (3/8 in x 13 in), 7100033195, 10 belts per carton, 5 cartons per case
Dynabrade 95544 Gear Grease, 2.5oz. Tube
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092 
