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.

Dynabrade 92190 2" W x 30" L 40 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 64001 SuperFinisher, 230 Volts (AC), 1 Phase, 60 Hz
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
Dynabrade 13531 Dynastraight 6" (152 mm) Extension Finishing Tool, 1 HP, Rear Exhaust, 1,800 RPM, 5/8"-11 Arbor
Dynabrade 64376 Collection Pan, Rear
Dynabrade 53091 3/8" Pistol Grip Drill, .7 HP, Rear Exhaust, 950 RPM
Standard Abrasives 703654, A/O Square Pad, 2 in x 2 in x 1/2 in, 1/4-20, 80, 7100105433
Dynabrade 58418 6" Dia.Two-Hand Dynorbital Random Orbital Sander, Non-Vacuum
Dynabrade 53477 Direct Drive Reversible Screwdriver, .5 HP, 3,700 RPM, 1/4" Hex Drive
Dynabrade 91567 6" Dynacut Extreme Orange Premium Film Disc, 180 Grit, Hook & Loop, Vacuum Holes, 50/Box
Dynabrade 48540 2" Dia. Right Angle Disc Sander, Rear Exhaust, .4 HP, 12,000 RPM
Dynabrade 52276 .7 hp Straight-Line Die Grinder, Rear Exhaust, 15,000 RPM, 1/4" Collet
Dynabrade 96824 Tune-Up Kit for .1 hp 3" Extreme Dynorbital Sander
Dynabrade 48530 3" Dia. Right Angle Disc Sander, Rear Exhaust, .4 HP, 12,000 RPM
Dynabrade 92779 4" W x 50' L 20 Micron Diamond Microfinishing Film DynaCut Roll
Dynabrade 93582 3/4" Dia. x 3-48 Female Center Thread, 180 Grit, A/O, 3-Ply, J-DynaCut Eyelet Star, 50/pack
Dynabrade 01547 Sleeve
Dynabrade 51846 1/4" Drill Right Angle, .4 HP, Front Exhaust, 12,000 RPM
Dynabrade 18440 Spindle
Dynabrade 81244 2" W x 60" L Very Fine NWN Surface Conditioning Belt, 10/pack
Dynabrade 11245 Contact Arm Ass'y, 5/8" Dia. x 1/8" W, Rubber Wheel, with 1/4" W Platen - 14" Reach
Dynabrade 15356 Contact Arm Assembly, 1 Dia. x 2 W, Serrated Wheel, 40 Durometer
Dynabrade 79185 1/2" W x 12" L 120 Grit DynaCut Premium Ceramic Belts, 50/pack
Dynabrade 92247 4" Dia. x 3/4" W Straight Fine Wire Wheel
Dynabrade 52834 1/4" Drill, .4 HP, Rear Exhaust, 3,600 RPM
Dynabrade 60230 - 30,000 lb. Jack with 1/4" Vi-Sorb Pad
Dynabrade 78069 2" W x 30" L Coarse NWN DynaBrite Belt, 10/pack
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
Dynabrade 32014 Filter Cage (for models 61204 and 614205)
Dynabrade 52660 1 hp Straight-Line Die Grinder, Rear Exhaust, 950 RPM, 1/4" Collet
Dynabrade 78487 3" Dia. x 1-1/2", 1/4-20 Female Center Thread, A/O, 120 Grit, 10-Ply J-DynaCut Cross Pad, 100/pack
Dynabrade 78627 1" Dia. x 1-1/2" W x 1/4" Center Hole, 180 Grit, 100/pack
Dynabrade 96236 Motor Tune-Up Kit
Dynabrade 54777 4" (102 mm) Dia. Extended Right Angle Type 27 Depressed Center Wheel Grinder, .7 HP, 13,500 RPM, 3/8"-24 Spindle 
