Irwin 373004 Hole Saw Mandrel 1/2 Inch Hex Shank

Product Description

The IRWIN 373004 is a hole saw mandrel designed to drive hole saws in a range of sizes from 1-1/4 inches through 6 inches in diameter. The mandrel features a 1/2 inch hex shank for secure chuck engagement in standard drills and drill presses. Weighing 0.52 pounds, it is a compact, lightweight driver suitable for use across multiple trades. Electricians, plumbers, HVAC technicians, and general contractors use hole saw mandrels when cutting through wood, metal, or composite panels during rough-in work. The hex shank geometry resists slipping under torque, making it a reliable choice for repetitive hole cutting tasks on the job site.

The IRWIN 373004 mandrel is suited for residential and light commercial applications where a wide range of hole saw diameters is needed from a single driver. Typical install scenarios include panel knock-outs, pipe penetrations, door hardware prep, and electrical box cutouts. Its 1-1/4 inch to 6 inch diameter compatibility means one mandrel can serve most standard bi-metal and carbide-tipped hole saws encountered in trade work, reducing the need to carry multiple drivers.

Key Features

• 1/2 inch hex shank provides positive engagement in standard drill chucks and quick-change systems
• Compatible with hole saws ranging from 1-1/4 inches to 6 inches in diameter
• Lightweight at 0.52 pounds for reduced fatigue during extended use
• Broad diameter range supports electricians, plumbers, and HVAC techs working across common hole sizes
• Sold individually as a single unit

Compatibility

Designed to fit hole saws from 1-1/4 inches to 6 inches in diameter. Verify that the specific hole saw being used accepts a standard arbor connection before installation.

Installation Notes

A licensed electrician, plumber, or HVAC technician typically selects the appropriate mandrel based on hole saw size and shank compatibility with the drill being used. Before changing or seating the hole saw onto the mandrel, ensure the drill is unpowered and disconnected from its power source. Secure the hole saw firmly to the mandrel per the manufacturer's arbor locking mechanism before beginning any cut. Follow applicable safety codes and wear appropriate eye and hand protection when operating hole saws.

Technical Specifications

• Shank Size: 1/2 inch hex
• Compatible Hole Saw Diameter Range: 1-1/4 inches to 6 inches
• Weight: 0.52 pounds
• UPC: 024721016614
• Sold As: Each

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 373004