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Maroon 7-inch hook-and-loop surface conditioning disc

3M

3M 00645 SC-DH Hook-and-Loop Disc 7 in Medium Maroon

SKU CH-NVKH-V0N53 MPN 00645

A 7-inch maroon hook-and-loop surface-conditioning disc with medium-grade aluminum-oxide abrasive for non-vacuum sanding

  • TypeSanders
  • Hook-and-loop backing enables quick disc changes
  • Aluminium oxide abrasive delivers consistent medium-grade finishing
  • Non-woven construction resists loading during extended use
  • Seven-inch diameter fits standard right-angle sanders
  • Maroon colour identifies medium grade at a glance

7-inch Medium Maroon Disc

The 3M SC-DH hook-and-loop disc is a non-woven surface-conditioning abrasive for power sanders. Its aluminum-oxide construction and maroon medium grade suit metal finishing, paint preparation and light rust removal on flat or contoured panels. The 7-inch diameter fits common right-angle or orbital machines with hook-and-loop backing pads.

Capacity and Headroom

Medium-grade aluminum oxide cuts consistently on steel, aluminium and composite substrates without loading quickly. The open non-woven structure resists clogging during extended passes, though heavy stock removal will wear the disc faster than coarse bonded alternatives. Non-vacuum design means dust extraction relies on the tool or ambient collection.

Upgrade Path

This disc replaces worn or clogged non-woven pads of the same diameter and attachment style. The jump is worth it when an existing disc no longer produces a uniform scratch pattern or when switching from a finer grade that cannot break through oxidation. It does not suit applications needing aggressive material removal or integrated vacuum holes.

Highlights

  • Hook-and-loop backing enables quick disc changes
  • Aluminium oxide abrasive delivers consistent medium-grade finishing
  • Non-woven construction resists loading during extended use
  • Seven-inch diameter fits standard right-angle sanders
  • Maroon colour identifies medium grade at a glance

Specifications

TypeSanders
Brand3M
Model00645

Questions about this item

Will the 7 in SC-DH disc fit the hook-and-loop pad on my older right-angle sander?

Yes — the 7 in diameter matches standard hook-and-loop back-up pads; the disc has no vacuum holes, so it seats cleanly on both vacuum and non-vacuum pads.

How can I confirm the medium-grade aluminum oxide surface is cutting properly once installed?

The maroon face should show an even scratch pattern and consistent material removal without loading; if the disc glazes or cuts unevenly, the grade or speed may need adjustment.

Does the box contain only the single 00645 disc, or are back-up pads and adapters included?

Only the 7 in SC-DH hook-and-loop disc is supplied; a compatible back-up pad and any required arbor adapter must be purchased separately.

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