3M 7010309161 Psa Disc Holder 4 in 1/4 in Shank

Product Description

The 3M 7010309161 is a PSA (pressure-sensitive adhesive) disc holder designed to back PSA abrasive discs during grinding and finishing operations. The holder face diameter is intentionally smaller than the disc it supports, making it easier to center the disc on the holder and remove it after use. It accepts a 1/4-inch shank, making it compatible with standard die grinders and rotary tools commonly used in metalworking, fabrication, and maintenance trades. The 4-inch disc holder is well suited for accessing tight spaces and contoured surfaces where larger backing plates cannot reach.

This disc holder is used in grinding, blending, and surface preparation tasks across metal fabrication, automotive bodywork, and general maintenance applications. It is particularly useful in hard-to-reach areas where standard orbital or angle grinder setups are impractical. Tradespeople and fabricators mount PSA abrasive discs directly to the face of the holder for controlled material removal on confined or irregular workpieces.

Key Features

• Face diameter smaller than disc size for easier disc centering and removal
• 1/4-inch shank fits standard die grinders and rotary tools
• 4-inch holder face supports PSA abrasive discs up to corresponding disc size
• Provides firm backing support during grinding in confined or hard-to-reach areas
• Lightweight at 0.08 pounds for reduced operator fatigue during extended use

Compatibility

Designed for use with PSA abrasive discs featuring a 1/4-inch center hole, for mounting on die grinders and rotary tools with a 1/4-inch collet or chuck.

Installation Notes

Installation is performed by trade professionals or experienced operators working with die grinders and rotary tools. Ensure the tool is powered off and disconnected from the air supply or power source before attaching or removing the disc holder. Thread the 1/4-inch shank securely into the tool collet using appropriate wrenches, and verify the shank is fully seated before operating. Always confirm the abrasive disc is firmly adhered to the holder face before beginning grinding operations.

Technical Specifications

• Disc Holder Face Size: 4 inches
• Shank Size: 1/4 inch
• Weight: 0.08 pounds
• Unit of Measure: Each
• UPC: 00051144450695

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010309161