M.k. Morse 177306 Bi-metal Hole Saw 1-7/8 in Variable Pitch

Product Description

The M.K. MORSE 177306 is a 1-7/8 inch diameter bi-metal hole saw built for demanding cutting applications across a wide range of materials. Constructed from M42 high-speed steel bi-metal, it delivers the hardness needed to cut through steel, cast iron, hardened steel, ceramic, and masonry materials without sacrificing the toughness required to resist tooth breakage. The variable pitch pattern at 5/6 teeth per inch reduces vibration and heat buildup during cuts, extending blade life on difficult materials. Licensed tradespeople and contractors working in mechanical, electrical, and construction trades rely on this saw for consistent, clean holes in both hard and soft substrates.

This hole saw is designed for use across a broad range of residential, commercial, and industrial applications. Its material application range includes acoustic tile, asbestos board, brick, cast iron, cement board, ceramic, cinderblock, composite, computer flooring, fiberglass, Formica, hardened steel, particleboard, and steel. The 1.937 inch cutting depth makes it suited for thicker materials and deeper penetration cuts typical in construction and mechanical system installation work.

Key Features

• 1-7/8 inch saw diameter for standard trade hole sizes
• M42 bi-metal construction for hardness and toughness in demanding cuts
• Variable pitch 5/6 TPI reduces vibration and extends tooth life
• 1.937 inch cutting depth handles thick materials and deep cuts
• Toothed cutting edge for clean, precise entry in hard and soft substrates
• Compatible with MHS30 mandrel system for secure arbor mounting

Compatibility

Compatible with the MHS30 mandrel system. Designed as an OEM-style replacement hole saw for use with standard bi-metal hole saw arbors accepting 1-7/8 inch diameter saws.

Installation Notes

Installation is performed by electricians, plumbers, HVAC technicians, and general contractors using a standard drill or drill press with a compatible mandrel and pilot bit. Secure the workpiece before cutting and operate at the appropriate drill speed for the material being cut — slower speeds are recommended for harder materials such as cast iron and hardened steel. Always wear appropriate PPE including eye protection and gloves. Inspect the saw for tooth damage before each use and replace if teeth are stripped or the body is cracked.