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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

  • Product 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.

How it compares

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

Price $5.99
Cheaper than about 86% of the 477 comparable items (median $21.99).

Specifications

Product
Brand name3M
Model name00645
Product typeSanders

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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