150mm Backing Pad — For Self-Adhesive PSA Sanding Discs, DA Sander

150mm backing pad with a smooth face, for self-adhesive PSA sanding discs on a dual-action or orbital sander. PSA discs stick straight onto the flat face of this pad — peel the disc liner, press it on, and sand. The pad threads onto the sander with a 5/16" UNF thread. A replacement or spare for a worn pad, or the pad to add if you are switching to PSA discs.

Smooth PSA face, not hook and loop
This pad has a flat, smooth face for pressure-sensitive adhesive (sticky-back) discs. It is not the grip-faced hook and loop pad — the two are not interchangeable. If you use hook and loop discs, see our hook and loop backing pad instead.

Size
150mm diameter (6")

Face
Smooth, for self-adhesive (PSA) discs

Thread
5/16" UNF, for DA orbital sanders

Use with
150mm self-adhesive PSA sanding discs

Fits
Any DA orbital sander with a 5/16" UNF thread.

Also known as PSA backing pad, sticky back sanding pad, orbital sander pad, DA sander backing pad or sanding backing plate.