Irwin 373100BX Bi-metal Hole Saw 1 Inch 350 Rpm

Product Description

The IRWIN 373100BX is a bi-metal hole saw designed for cutting through a wide range of materials including wood, aluminum, copper, iron, stainless steel, and zinc. The 1-inch diameter cutting profile and 350 RPM rated speed make it well-suited for trade applications where a clean, consistent hole is required across mixed-material assemblies. The bi-metal construction combines a hardened high-speed steel tooth edge with a flexible alloy steel body, giving it both cutting performance and resistance to tooth stripout during demanding cuts. HVAC techs, plumbers, and electricians all reach for this saw when penetrating framing, sheet metal, and pipe access points.

This hole saw is used in residential and light commercial construction and service work. It fits standard mandrel systems, making it a quick swap on a drill or drill press already set up on the job. Common applications include conduit knock-outs, pipe penetrations through wood framing, and access holes in sheet metal panels. The 1-inch size is a frequently needed diameter for low-voltage wiring runs, small-diameter pipe pass-throughs, and fitting access holes.

Key Features

• Bi-metal construction for cutting wood, aluminum, copper, iron, stainless steel, and zinc
• 1-inch diameter cutting size for pipe penetrations and conduit knock-outs
• 350 RPM rated operating speed
• Compatible with standard arbor and mandrel systems
• Hardened tooth edge resists stripout during cuts in harder materials

Compatibility

Designed as an OEM-style replacement or direct addition to standard bi-metal hole saw mandrel systems used in residential and light commercial trade work.

Installation Notes

Installation is performed by HVAC technicians, plumbers, and electricians using a standard drill or drill press with a compatible mandrel. Ensure the workpiece is secured before cutting and apply steady, consistent pressure without forcing the saw. Keep RPM at or below the rated 350 RPM when cutting harder materials such as stainless steel to extend tooth life. Always wear appropriate eye protection and secure guards when operating.

Technical Specifications

• Diameter: 1 inch
• Maximum Speed: 350 RPM
• Construction: Bi-Metal
• Compatible Materials: Wood, aluminum, copper, iron, stainless steel, zinc
• Weight: 0.1 pounds
• Sold As: Each

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 373100BX