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Pack of 25 maroon 7-inch fiber discs with 5/8-11 GL hub

3M

3M 27407 Cubitron II 982C 7 in 36 Grit Disc Pack 25

SKU CH-YH6M-3KGEF MPN 27407

A 25-pack of 7-inch ceramic fiber discs with 36 grit for aggressive material removal on power sanders up to 8,600 RPM

  • Product typeSanders
  • Cuts fast with 36-grit ceramic mineral
  • Runs cool to reduce workpiece discoloration
  • Wears evenly for consistent finish across discs
  • Fits 5/8-11 spindles with GL quick-change hub
  • Pack of 25 discs rated to 8,600 RPM

3M Cubitron II 982C 7 in 36 Grit Discs

This pack contains 25 fiber abrasive discs designed for heavy material removal on metal surfaces. They suit professional welders and fabricators who need aggressive stock removal with consistent results. The extra-coarse 36 grit ceramic mineral cuts fast and maintains performance through the job.

5/8 In.-11 GL Quick-Change Hub

Each disc uses a 5/8 In.-11 GL connector that locks onto compatible right-angle grinders without tools. The hub size is the single specification that decides fitment; verify your grinder spindle matches this exact thread before ordering. Mismatched threads will prevent secure mounting.

Tool-Free Swap on Matching Grinders

Installation takes seconds on a matching spindle: align the hub, press and twist to lock. The most common issue is fitting the disc to a grinder with a different arbor thread or hub profile, which causes wobble or inability to secure the disc. Always confirm spindle compatibility first.

How it compares

Measured against everything we stock in Sanders, Rotary & Demolition Tools, at today’s prices. Recalculated every night.

Price $136.99
Pricier than about 88% of the 477 comparable items (median $21.99).

Specifications

Product
Brand name3M
Model name27407
Product typeSanders

Questions about this item

How does the 36 grit rating affect material removal on a 7 in disc?

The 36 grit is extra coarse, giving fast stock removal on metal while the ceramic mineral wears evenly and runs cool.

What does the GL connector type and 5/8 in.-11 size mean for mounting?

The GL quick-change hub with a 5/8 in.-11 thread locks directly onto compatible right-angle grinders without extra adapters.

Will a 7 in disc fit my sander’s backing pad and guard?

The disc measures 7 in overall diameter, so it requires a 7 in backing pad and a matching guard rated for at least 8,600 RPM.

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