Lenox 1772778 Hole Saw 1-7/8 in Bi-metal Variable Pitch

Product Description

The LENOX 1772778 is a bi-metal hole saw designed for cutting through metal and similar hard materials in trade and industrial applications. It measures 1-7/8 inches in saw diameter with a cutting depth of 1-9/16 inches. The toothed cutting edge uses a variable pitch pattern, which helps reduce vibration and chatter during cuts and extends blade life across a range of material thicknesses. The arbored design accepts a 1/4-inch shank arbor for secure chuck mounting. Licensed tradespeople and skilled technicians in HVAC, plumbing, and electrical work rely on this type of hole saw for conduit knock-outs, pipe penetrations, and panel openings.

This hole saw is suited for residential and light commercial trade work where consistent, clean holes through metal are required. Typical applications include cutting through electrical enclosures, sheet metal duct work, junction boxes, and metal framing members. The 1-7/8-inch diameter is a common size for conduit and pipe rough-in work. The compact cutting depth of 1-9/16 inches makes it practical for thinner stock and layered assemblies common in mechanical and electrical rough-in scenarios.

Key Features

• 1-7/8-inch saw diameter suits common conduit and pipe penetration sizes
• 1-9/16-inch cutting depth handles sheet metal and thin structural stock
• Bi-metal construction provides durability and resistance to heat buildup during metal cutting
• Variable pitch tooth pattern reduces vibration and extends blade service life
• Arbored design with 1/4-inch shank for secure, centered chuck engagement
• Toothed cutting edge delivers clean hole edges in metal applications

Compatibility

Designed as an OEM-style replacement or standard trade hole saw compatible with 1/4-inch arbored mandrels and standard drill chuck setups used across HVAC, plumbing, and electrical hole saw applications in metal materials.

Installation Notes

Installation is performed by licensed electricians, HVAC technicians, and plumbers using a standard drill or drill press. Always de-energize and lock out any electrical panel or equipment before cutting into enclosures or near live conductors per NEC guidelines. Secure the workpiece firmly before cutting to prevent rotation or movement. Use appropriate cutting fluid or lubricant on metal stock to reduce heat and extend blade life.