The Advanced Solution for Challenging 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 787C contains the exact amount of precision shaped grain (PSG) you need to optimize the balance of speed and longevity for challenging applications from grinding to deburring. Moreover, to keep the disc and workpiece cool, a grinding aid is incorporated, further prolonging disc life. Disc construction includes a stiff fiber backing and strong resin bond that provide durability and tear-resistance, which along with abrasive grain enables operators to complete more parts per disc and requires fewer disc changes.
The exceptional life and cut of our 787C 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 787C 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. It wears evenly, and because the abrasive itself stays cooler and sharper, 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.
Choice of Power Tool Attachment
To suit many different project needs, we offer these discs in a range of sizes and a variety of attachment styles. Larger sized discs have a 7/8 inch center hole and require the use of a 3M™ disc pad face plate and hub, which are attached to a right angle grinder with a disc retainer nut (all sold separately). GL and TN quick change attachments are an option for 4-1/2 inch to 7 inch discs. Smaller sized quick change Roloc™ Discs are also available (sold separately) and provide reliable attachment to the tool and easy disc changes between applications.
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 787C 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 62715, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 250 mL Tube, 7100039215, 2/case
Insize 6315, MICROMETER MEASURING FORCE DETECTOR, 6928640351143
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
3M 28135, Hookit Clean Sanding Disc 900DZ, 6 in P100 J-weight, Die 500LG, 7010300153
3M 76631, Roloc Disc 777F, TR, 3 in x NH, 36 YF-weight, 7000028339
3M 76625, Roloc Disc 777F, 80 YF-weight, TR, 1 in, Die R100N, 7000045621
Dynabrade 02084 Angle Housing Assembly,Steel, Rear Exhaust
3M 20889, PSA Cloth Disc 348D, 50 X-weight, 5 in x NH, Die 500X, 7010294666
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M 21220, Industrial Plastic Adhesive 4475, Clear, 5 Oz Tube, 7000000920, 36/case
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 88905, PSA Cloth Disc 348D, 40 X-weight, 12 in x NH, Die 1200B, 7010294665
3M 62714, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 50 mL Tube, 7100039216, 10/case
3M 11000, Roloc Disc 361F, 24 YF-weight, TR, 2 in, Die R200P, 7000028183
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 76790, Roloc Disc 361F, 60 YF-weight, TS, 2 in, Die RS200P, 7010300088
3M 50010, VentureClad Insulation Jacketing Tape 1577CW-WME, White, 99 mm x 13.7 m, 7010379907
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628
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 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
Standard Abrasives 877059, Unitized Mounted Point, 732 A3 x 1/4 in, 3M 7010310345
3M 76429, Roloc Disc 361F, 36 YF-weight, TR, 4 in, Die R400BB, 7000148152
3M 20897, PSA Cloth Disc 348D, 80 X-weight, 4 in x NH, Die 400BB, 7010294664
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Standard Abrasives 712644, A/O Tapered Cone Point, K-110 180, 7100166526, 100 per case
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686
3M 06536, Scotch Steel Gray Masking Paper, 06536, 36 in x 1000 ft, 1 per case, 7000045443
3M Super Abrasives Roloc Disc, 2" Type-R, Medium AO High Strength, Box of 50 
