3M™ Fibre Disc 782C, 36+, 9-1/8 in x 7/8 in, Die 912J, 25/Bag, 100 ea/Case

Engineered for ultra-rapid cut on carbon steel, 3M™ Fibre Disc 782C features 3M Precision Shaped Grain. With its outstanding cut, durability, and ease of use, this disc offers a major step up in performance over conventional fiber discs. Advanced abrasive technology makes it an excellent choice for tough applications including weld removal, blending and finish refinement.
Special Price $6.16 Regular Price $7.25
UPC 00076308895921
3M ID 7100099301
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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 the 782C Fibre Disc make it one of 3M's best grinding discs for high production environments, providing significant gains over conventional fiber discs. When a higher-tier fiber disc may be under-utilized but productivity is still your bottom line, the 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, this disc is available in a range of sizes and a variety of attachment styles. The 7/8 inch center hole (CH) discs 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 they offer a complete line of high quality metalworking abrasive solutions to meet your tough jobs. The 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.


  • Rapidly cuts carbon steel
  • Premium mineral excels at heavyweight applications such as weld grinding, beveling, and edge chamfering
  • 3M Precision Shaped Grain yields higher cut rates while completing more parts per disc than conventional discs
  • Long-lasting abrasive helps reduce cost
  • Stiff fiber backing and strong resin bond provide durability and tear-resistance
  • Compatible with 3M™ disc pad face plates and hubs (sold separately)
More Information
3M ID 7100099301
Keywords 3M, 3M Fibre Disc 782C, fiber disc, precision shaped grain, carbon steel, weld removal, blending, finish refinement, rapid cut, abrasive technology, weld grinding, beveling, edge chamfering, premium mineral, tear-resistance, high production environments, stock removal, ceramic abrasives, microreplication technology, triangular structures, electrostatically oriented, attachment styles, right angle grinder, quick change attachments, face plate, metalworking, metalworking abrasive solutions, automotive, energy, manufacturing, transportation, aerospace, appliance, collision repair, commercial vehicles, defense, equipment maintenance, exterior and glass, heavy industrial, industrial maintenance, marine, metal fabrication, nuclear energy, paint prep, recreation vehicles, rail, rig fabrication, specialty vehicles, wind energy
Global Product Hierarchy Abrasives > Abrasive Discs > Fibre Grinding Discs
Abrasive Material Precision Shaped Ceramic
Application Beveling & Back Gouging, Deburring, Finishing, Grinding, Surface Preparation, Weld Grinding
Backing Material Fibre
Backing Thickness (Metric) 0.0 NP
Backing Thickness (Imperial) 0.0 NP
Bond Type Resin
Center Hole Diameter (Imperial) 0.875 in
Center Hole Thread Size Non Pertinent
Center Hole Diameter (Metric) 22.225 mm
Color Family Red
For Use On Aluminum
Grit 36+
Product Color Maroon
Product Number 782C
Product Type simple
Quantity 0
Trademark 1 3M™
Country of Origin United States
Sales Unit EA
SAP Shelf Life In Days 3650
Base - Billing Unit EA
Base - Customary Height Dimension 0.87519685
Base - Customary Length Dimension 9.12519685
Base - Customary Width Dimension 9.125984252
Base - Metric Gross Weight 81.193 G
Base - Metric Height Dimension 2.223 CM
Base - Metric Length Dimension 23.178 CM
Base - Metric Width Dimension 23.18 CM
Base - Item Quantity 1
Base - Unit EA
Unit of Use - Billing Unit EA
Unit of Use - Customary Cubic Dimension 72.86235044911035 ci
Unit of Use - Customary Gross Weight 0.17899992453576766 lbs
Unit of Use - Customary Net Weight 0.1789933106679021 lbs
Unit of Use - Customary Height Dimension 0.8751968503937008 in
Unit of Use - Customary Length Dimension 9.125196850393701 in
Unit of Use - Customary Width Dimension 9.125984251968504 in
Unit of Use - Metric Cubic Dimension 1.194 CDM
Unit of Use - Metric Net Weight 81.19 G
Unit of Use - Metric Height Dimension 2.223 CM
Unit of Use - Metric Length Dimension 23.178 CM
Unit of Use - Metric Width Dimension 23.18 CM
Unit of Use - Item Quantity 1
Unit of Use - Total Unit Quantity 1
Unit of Use - Previous Packaging Level Quantity 1
Unit of Use - Item Unit EACH
Unit of Use - Unit EA
Inner - Billing Unit EA
Inner - Customary Cubic Dimension 587.8124964911348 ci
Inner - Customary Gross Weight 4.57459194033621 lbs
Inner - Customary Net Weight 4.475383922353015 lbs
Inner - Customary Height Dimension 2.5 in
Inner - Customary Length Dimension 14.25 in
Inner - Customary Width Dimension 16.5 in
Inner - Metric Cubic Dimension 9632.521 CCM
Inner - Metric Net Weight 2.03 KG
Inner - Metric Height Dimension 6.35 CM
Inner - Metric Length Dimension 36.195 CM
Inner - Metric Width Dimension 41.91 CM
Inner - Item Quantity 25
Inner - Total Unit Quantity 25
Inner - Previous Packaging Level Quantity 25
Inner - Item Unit EACH
Inner - Previous Packaging Level Unit EACH
Inner - Unit BAG
Shipper - Billing Unit EA
Shipper - Customary Cubic Dimension 1489.1486968013305 ci
Shipper - Customary Gross Weight 19.508705580739818 lbs
Shipper - Customary Net Weight 17.89933106679021 lbs
Shipper - Customary Height Dimension 10.95 in
Shipper - Customary Length Dimension 12.70984251968504 in
Shipper - Customary Width Dimension 10.7 in
Shipper - Metric Cubic Dimension 24402.775 CCM
Shipper - Metric Weight 8.849 KG
Shipper - Metric Net Weight 8.119 KG
Shipper - Metric Height Dimension 27.813 CM
Shipper - Metric Length Dimension 32.283 CM
Shipper - Metric Width Dimension 27.178 CM
Shipper - Item Quantity 100
Shipper - Total Unit Quantity 100
Shipper - Previous Packaging Level Quantity 4
Shipper - Previous Packaging Level Unit BAG
Shipper - Item Unit EACH
Shipper - Unit CS
Pallet - Billing Unit EA
Pallet - Customary Cubic Dimension 98248.22799251898 ci
Pallet - Customary Gross Weight 971.9982723695286 lbs
Pallet - Customary Net Weight 859.1678912059301 lbs
Pallet - Customary Height Dimension 48.8 in
Pallet - Customary Length Dimension 48.0 in
Pallet - Customary Width Dimension 42.0 in
Pallet - Metric Cubic Dimension 1.61 M3
Pallet - Metric Net Weight 389.712 KG
Pallet - Metric Height Dimension 123.952 CM
Pallet - Metric Length Dimension 121.92 CM
Pallet - Metric Width Dimension 106.68 CM
Pallet - Item Quantity 4800
Pallet - Total Unit Quantity 4800
Pallet - Previous Packaging Level Quantity 48
Pallet - Previous Packaging Level Unit BOX
Pallet - Item Unit EACH
Pallet - Unit PAL
Pallet - Pallet Layer Quantity 4
Pallet - Shipping Container Per Layer Quantity 12
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