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.

3M 17098, Hood Assembly with Sealed Seams Inner Shroud and Premium Head Suspension S-857, 7000002350, 1 EA/Case
Dynabrade 51750 .1 hp Straight-Line Extension Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
Insize 1120-150AWL, DIGITAL INSIDE GROOVE CALIPER, 1-6"/25.4-150mm, built-in wireless, 6928640384769
3M 88905, PSA Cloth Disc 348D, 40 X-weight, 12 in x NH, Die 1200B, 7010294665
3M 19769, Utility Cloth Sheet 314D, 9 in x 11 in P150 J-weight, 7000000357
3M 05682, Disc Pad Holder, 3M 916, 6 in x 1/8 in x 3/8 in 5/8-11 Internal, 7000120890
3M 21639, PSA Cloth Disc 348D, 36 X-weight, 6 in x NH, Die 600Z, 7000148149
3M 16611, Accuspray Atomizing Head, Clear, 1.8 mm, 7000000500 (4 Nozzles/Kit)
3M 76625, Roloc Disc 777F, 80 YF-weight, TR, 1 in, Die R100N, 7000045621
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 82454, Hot Melt Adhesive 3792 LM Q, Clear, 5/8 in x 8 in, 7000000880, 11 LBS/Case
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 76631, Roloc Disc 777F, TR, 3 in x NH, 36 YF-weight, 7000028339
3M 35124, Grippy Sanding Cloth Trial Kit, 7100230957
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 79448 6" x 9" DynaBrite General Purpose Maroon Hand Pad, 20/box
3M 87429, Final Finishing Pads 10199NA4PK, 3 3/4 in x 6 in x 5/8 in, Replaces 0000 Steel Wool, 7100096075, 4 pads per pack
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 76750, Roloc Disc 777F, 60 YF-weight, TS, 2 in, Die RS200P, 7010299188
3M 20897, PSA Cloth Disc 348D, 80 X-weight, 4 in x NH, Die 400BB, 7010294664
Dynabrade 79108 1/2" W x 12" L 60 Grit DynaCut Premium Ceramic Belts, 50/pack
3M 62714, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 50 mL Tube, 7100039216, 10/case
Dynabrade 14360 Pneumatic Pipe Belt Finisher
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M 15913, Scotch-Brite Roloc Disc High Strength, TR, 2 in X NH A Medium, 7000000710 
