Irwin 373114BX Bi-metal Hole Saw 1-1/4 Inches

Product Description

The IRWIN 373114BX is a bi-metal hole saw with a 1-1/4 inch cutting diameter, designed for cutting through a wide range of materials including wood, aluminum, copper, iron, stainless steel, and zinc. The bi-metal construction combines a hardened high-speed steel tooth edge with a flexible steel body, allowing the blade to resist stripping and breakage during demanding cuts. Rated at 275 RPM, this saw is suited for controlled, precise hole cutting in both light-gauge metals and common construction materials. Electricians, plumbers, HVAC techs, and general contractors reach for this size when running conduit, pipe, or ductwork penetrations through framing and light structural members.

The 373114BX is commonly used in residential and light commercial installation work where 1-1/4 inch clean-entry holes are required. Typical applications include running electrical conduit, copper supply lines, PEX tubing, or low-voltage wiring through wood studs, metal studs, aluminum panels, and sheet iron. Its multi-material tooth geometry makes it a practical single-tool solution when a job site mix of wood and metal substrates is encountered.

Key Features

• Bi-metal construction for cutting wood, aluminum, copper, iron, stainless steel, and zinc
• 1-1/4 inch cutting diameter for standard conduit, pipe, and wire penetration holes
• 275 RPM rated speed for controlled cutting in hard and soft materials
• Flexible steel body resists blade breakage under lateral load
• Sold individually (each)

Compatibility

Designed as an OEM-style replacement or direct-use hole saw compatible with standard arbors that accept bi-metal hole saws in the 1-1/4 inch diameter class.

Installation Notes

Installation requires a compatible hole saw arbor and a variable-speed drill or drill press capable of being set to the rated 275 RPM. Secure the workpiece before cutting and use appropriate eye and hand protection when cutting metal substrates. When cutting stainless steel or iron, a cutting lubricant helps extend tooth life and reduces heat buildup. Always follow applicable NEC or IPC guidelines when sizing penetrations for conduit or pipe.

Technical Specifications

• Cutting Diameter: 1-1/4 inches
• Blade Type: Bi-Metal
• Rated Speed: 275 RPM
• Compatible Materials: Wood, aluminum, copper, iron, stainless steel, zinc
• Weight: 0.25 pounds
• UPC: 024721000255

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 373114BX