Stanley 30857aa1 Hole Saw Arbor 7/16 Inch Shank

Product Description

The STANLEY 30857aa1 is a hole saw arbor adapter designed to connect hole saw cups to compatible drill drivers using a 7/16 inch shank. Constructed from carbon steel, this arbor provides the mechanical interface between the drill and the cutting cup, transferring torque and maintaining concentricity during the cut. It is a standard accessory in metalworking, plumbing rough-in, electrical trade work, and general construction where hole saws are used to core through wood, metal, and similar materials. HVAC techs, plumbers, and electricians routinely carry arbors like this to swap hole saw sizes without changing the full assembly.

This arbor adapter is suited for use in residential and commercial jobsite applications where hole saws are deployed for conduit entry points, pipe penetrations, junction box cutouts, and similar trade tasks. The 7/16 inch shank fits standard chuck configurations common across cordless and corded drill drivers used in the trades. It is a replacement or spare arbor intended for professional use with hole saw cups sold separately.

Key Features

• 7/16 inch shank diameter for compatibility with standard drill chucks
• Carbon steel construction for durability under torque loads
• Functions as the mechanical link between drill driver and hole saw cup
• Compact form factor suited for use in tight or confined installation spaces
• Replacement-ready design for trade professionals who carry multiple hole saw sizes

Compatibility

Designed as an OEM-style arbor adapter for use with standard hole saw cups requiring a 7/16 inch shank interface. Specific cup compatibility should be verified against hole saw manufacturer fitment data.

Installation Notes

Installation of this arbor adapter is typically performed by electricians, plumbers, and HVAC technicians as part of hole saw assembly setup. Ensure the drill is powered off and the battery removed or the tool unplugged before attaching or removing the arbor. Thread the arbor securely into the hole saw cup and confirm the shank is fully seated in the drill chuck before operation. Follow applicable jobsite safety practices and manufacturer guidelines for hole saw use.

Technical Specifications

• Shank Size: 7/16 inch
• Material: Carbon Steel
• Height: 5.8 inches
• Length: 1.9 inches
• Width: 0.9 inches

Standard Information

• Brand: STANLEY
• Manufacturer Part Number: 30857aa1