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 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
Dynabrade 95544 Gear Grease, 2.5oz. Tube
3M 77157 Scotch-Brite Durable Flex Belt, 77157, 1/2 in x 18 in, A MED, Trial Pack, 7010365702
Norton 66261096557 - 3" X 1/2" Blaze Rapid Strip Ceramic Alumina Extra Coarse Grade Non- Woven Abrasive Disc With Quick Change TR III Attachment, 25 Each
3M 65087, Scotch-Brite Diamond Wheel, 3" x 1/2" x 3/8" 645DC, 7100083803
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
3M 07591, Outdoor Masking Poly Tape 5903, Red, 5 in x 60 yd, 7.5 mil, 7010334725
3M 06970, Scotch Polyethylene Coated Cloth Tape 390, Olive, 48 mm x 54.8 m, 11.7 mil, 7000048963
3M 97841, Value Duct Tape 1900, Silver, 1.88 in x 60 yd, 5.8 mil, 7010375734
3M 49833, Multi-Purpose Duct Tape 3900, Black, 48 mm x 54.8 m, 7.7 mil, 7000148383
3M 63738, Contractor Grade Multi-Use Duct Tape 2979, Silver, 1.88 in x 60 yd, 7010335692
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
Dynabrade 78295 3" Dia. x 6A M Medium Type R Unitized Locking-Type Disc, 25/pack
Insize 7315-7, WIRELESS DATA TRANSFER SYSTEM, MULTICHANNEL RECEIVER (Type-C port), 6940561938784
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
3M 94733, Cubitron ll Cloth Belt 947A, 60+ X-weight, 3-1/2 in x 15-1/2 in, Fabri-lok, Single-flex, 7100093314, 50 per case
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M 20913, PSA Cloth Disc 348D, 36 X-weight, 2 in x NH, Die 200P, 7000118919
Standard Abrasives 42505, A/O Flexible Flap Wheel 612425, 1-1/2 in x 1 in x 1/4 in 60, 7010367715, 10 per case
3M 10118, Synthetic Steel Wool Pads, 10118NA, #0 Fine, 7000126148
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 16580, Accuspray ONE Spray Gun System with Standard PPS, 7100099202
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U
NORTON 66254497068 - 3" Dia. Rapid Blend Vortex Disc, TR (TYPE III), Quick-Change Non-Woven, Medium, 25 Each 
