3M 7000121639 | 543629 Standard Abrasives 4-1/2" Diameter Medium Holder Pad

Description

The 3M 7000121639 Standard Abrasives holder pad is a medium density back up pad made for reliable disc support and consistent surface contact during sanding and finishing operations. Designed as a 4-1/2 inch disc holder pad, it provides a smooth, hard face surface that prevents bumps or extrusions on abrasive discs and helps maintain flat, uniform contact. This holder pad is threaded for quick attachment and removal, improving productivity on jobs that require frequent disc changes. Suited for general purpose grinding and finishing with resin fiber discs and coated abrasives, the pad balances flexibility and support for repeatable, measurable results.

Product Features and Benefits

Smooth hard face for snag free finishing

The flat, smooth face prevents tooling marks and extrusions, ensuring consistent finish quality with sanding discs and resin fiber discs. The pad’s hard face is engineered to reduce surface irregularities.

Medium density for general purpose work

This medium density abrasive pad holder provides an optimal compromise between flexibility and support for most finishing and stock removal tasks. It helps conform to minor contours while keeping the abrasive stable under load.

Threaded attachment for fast disc changes

Threaded grinding sanding pad attachment allows secure mounting to standard mandrels and rapid replacement of sanding discs. This reduces downtime and improves workflow on production and repair tasks.

Compatibility with 4 ½ inch abrasives

Specifically sized to support 4.5" (114.3 mm) discs, this backing pad is suitable for common angle grinder and random orbital setups. Use it with Standard Abrasives discs for predictable, repeatable performance.

Frequently Asked Questions

Is this a threaded backup pad for sanding discs?

Yes, the 3M 7000121639 uses a threaded backup pad design for secure disc mounting and quick replacement.

Is it a medium density abrasive pad holder?

Yes, it is medium density, balancing flexibility and support for general-purpose sanding and finishing.

Will it work as an angle grinder sanding disc backing pad?

Yes its 4-½ inch diameter and threaded attachment make it suitable as an angle grinder sanding disc backing pad.

Can it accept resin fiber discs and serve as a grinder sanding pad attachment?

Yes, it is compatible with resin fiber discs and functions as a reliable grinder sanding pad attachment for consistent results.

Warning:

This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.

For more information, visit www.P65Warnings.ca.gov