40 grit Grinding Wheels | McMaster-Carr

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249 Products

About Sanding Abrasives

Long-Life Flap Sanding Discs

With more flaps than standard discs, these last 30-40% longer.

Flap Sanding Discs

Overlapping abrasive flaps bonded to a backing plate provide consistent material removal and even finishes.

Long-Life Fast-Cutting Flap Sanding Discs

With more flaps than standard discs, these last 30-40% longer.

Fast-Cutting Flap Sanding Discs

These discs have a harder abrasive than standard flap sanding discs.

Aggressive-Removal Flap Sanding Discs

A heavy duty backing plate provides more support than standard discs for heavy material removal.

Cool-Sanding Flap Sanding Discs

The flaps alternate between an abrasive to remove material and a lubricant that minimizes heat to reduce discoloration of the work surface.

Trimmable Flap Sanding Discs

The backing plate on these discs can be sheared away as the abrasive flaps wear down, allowing you to use more of the disc rather than replacing with a new one.

Flap Sanding Discs for Right-Angle Welds

The flaps wrap around the outer edge of these discs to sand welds at right angles.

Long-Life Flap Sanding Discs for Corners

These discs have a harder abrasive than standard flap sanding discs for corners.

Flap Sanding Discs for Corners

Set at an angle and widely spaced, the overlapping abrasive flaps reach into corners.

Flap Sanding Discs for
Stainless Steel and Hard Metals

Long-Life Flap Sanding Discs for
Stainless Steel and Hard Metals

With more flaps than standard discs, these last 30-40% longer.

Fast-Cutting Flap Sanding Discs
for Stainless Steel and Hard Metals

These discs have a harder abrasive than standard flap sanding discs.

Cool-Sanding Flap Sanding Discs
for Stainless Steel and Hard Metals

The flaps have an abrasive to remove material and a lubricant that minimizes heat to reduce discoloration of the work surface.

Trimmable Flap Sanding Discs for
Stainless Steel and Hard Metals

The backing plate on these discs can be sheared away as the abrasive flaps wear down, allowing you to use more of the disc rather than replacing with a new one.

Flap Sanding Discs for Corners on
Stainless Steel and Hard Metals

Set at an angle and widely spaced, the flaps reach into corners.

Flap Sanding Discs for Aluminum,
Soft Metals, and Nonmetals

A coating prevents dust and debris from building up on the abrasive surface.

Long-Life Flap Sanding Discs for
Aluminum, Soft Metals, and Nonmetals

With more flaps than standard discs, these last 30-40% longer.

Cool-Sanding Flap Sanding Discs for
Aluminum, Soft Metals, and Nonmetals

The flaps have an abrasive to remove material and a lubricant that minimizes heat to reduce discoloration of the work surface.

Quick-Change Flap Sanding Discs

Quick-Change Flap Sanding Discs
for Stainless Steel and Hard Metals

Quick-Change Flap Sanding Discs for
Corners on Stainless Steel and Hard Metals

Set at an angle and widely spaced, the flaps reach into corners.

Multipurpose Quick-Change Flap Sanding Discs

Sanding Discs

Quick-Change Sanding Discs

A special fastener on the back of these discs allows you to easily swap one disc for another.

Quick-Change Sanding Discs for
Aluminum, Soft Metals, and Nonmetals

A special fastener on the back of these discs allows you to easily swap one disc for another.

Adhesive-Back Sanding Discs

Press onto a compatible sanding tool or backup pad; peel off to remove.

Clog-Resistant Adhesive-Back Sanding Discs

A coating prevents dust and debris from building up on the abrasive surface.