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Maroon 7-inch ceramic fiber disc, pack of 25

3M

3M 27405 Cubitron II 982C 7in 36G Disc PK25

SKU CH-CGDC-CD29Y MPN 27405

A 7-inch ceramic fiber disc rated at 36 grit for aggressive stock removal on metal, supplied in a pack of 25

  • Product typeSanders
  • 36 grit extra coarse removes material fast
  • Ceramic mineral wears evenly for consistent finish
  • Runs cool to reduce heat damage
  • Quick-change TN connector fits 5/8 in.-11 spindles
  • 25 discs per pack for extended use

3M Cubitron II 982C 7 in 36 Grit Discs

These 3M Cubitron II 982C fiber discs use ceramic abrasive on a YY-weight fiber backing for extra-coarse material removal. The 7 in diameter and 5/8 in.-11 TN connector fit compatible right-angle grinders used in metal fabrication and weld preparation. A pack contains 25 discs rated for a maximum operating speed of 8,600 RPM.

Quick-Change TN Mount Installs in Seconds

The TN quick-change connector threads onto a 5/8 in.-11 spindle without tools, so disc swaps take only a few seconds. Ensure the grinder’s maximum RPM meets or exceeds 8,600 RPM and that the flange is clean; an overspeed or dirty mounting surface can cause vibration and premature tear-out of the fiber backing.

Ceramic Grain Runs Cool Under Continuous Grinding

The 982C series is engineered to wear evenly and run cool, optimizing mineral breakdown during sustained high-pressure grinding. Closed-coat coverage resists loading on ferrous metals, maintaining cut rate over long passes where conventional discs would glaze and overheat the workpiece.

How it compares

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

Price $125.99
Pricier than about 86% of the 477 comparable items (median $21.99).

Specifications

Product
Brand name3M
Model name27405
Product typeSanders

Questions about this item

How do I know the disc is running at the correct speed after mounting it on my sander?

The disc is rated for a maximum of 8,600 RPM; run your sander at or below that speed and the disc should wear evenly and stay cool as designed.

What comes in the box and do I need any extra parts to use these discs?

The package contains 25 fiber discs with a 5/8 in.-11 TN quick-change connector; no additional hardware is required if your sander accepts that fitting.

Should I choose the 36-grit version or a finer grit for heavy stock removal?

The 36-grit grade is extra coarse and intended for aggressive material removal; select a higher grit number only when a smoother finish is needed.

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