Greenlee 8251 Variable Pitch Bi-Metal Hole Saw, Multi-Size

Greenlee 8251 Variable Pitch Bi-Metal Hole Saw, Multi-Size

The Greenlee 8251 Variable Pitch Bi-Metal Hole Saw is engineered for electricians, contractors, and tradespeople who need a dependable cutting tool for boring clean, precise holes through a wide range of materials. This hole saw is available in diameters ranging from 1/2" through 4-1/4", so you can match the exact bore to the conduit, fixture, or panel opening on the job. Every size in the 8251 family shares the same extra-tough bi-metal blade construction, a 1-5/8 In cutting depth that lets the saw cut all the way through standard 2x4 wood studs in a single pass, and a steam oxide finish that keeps the saw running cooler during extended use. An extra-thick backplate is common across the line as well, minimizing vibration for a smoother, more controlled cut every time regardless of which diameter you select.

Key Features

• Diameter Range: Available in sizes from 1/2" up to 4-1/4", covering the common bore diameters needed for conduit, fixture, and panel openings.
• Deep Cutting Depth: A shared 1-5/8 In cutting depth across the family allows every size to fully penetrate 2x4 wood studs, making it ideal for running conduit, cable, or piping through framing.
• Durable Bi-Metal Construction: The blade is made of extra-tough bi-metal using the highest grade tool steel for long-lasting sharpness and durability under repeated use, no matter which diameter you choose.
• Cooler-Running Steam Oxide Finish: The steam oxide finish helps the saw run cooler, reducing heat buildup during extended cutting sessions and helping extend blade life.
• Extra-Thick Backplate: A reinforced, extra-thick backplate minimizes vibration during cutting, resulting in smoother, easier, and more accurate holes across the entire size range.
• Multi-Material Versatility: Cuts cleanly through steel, tin, aluminum, fiberglass, wood, and plastic, making it a versatile addition to any electrician's or contractor's toolkit.

Technical Specifications

• Product Subgroup: Hole Saws & Bits
• Type: Bi-Metal Hole Saw
• Available Sizes: 1/2", 3/4", 1", 1-1/4", 1-5/8", 1-3/4", 1-7/8", 2-1/8", 2-3/8", 2-5/8", 2-3/4", 3", 4-1/8", 4-1/4"
• Cutting Depth: 1-5/8 In
• Country of Origin: United States

Typical Applications

• Boring holes for conduit, cable, and wiring runs through wood studs and framing
• Cutting access holes in steel, tin, and aluminum panels and enclosures
• Fiberglass and plastic panel penetrations for electrical and mechanical installations
• Renovation and new construction electrical rough-in work
• General maintenance and repair drilling tasks requiring a deep, clean cut

Why Greenlee?

Greenlee builds tools for the demands of professional electrical work, and the 8251 Variable Pitch Bi-Metal Hole Saw family is no exception. With its highest grade tool steel bi-metal blade, extra-thick backplate for vibration control, and a steam oxide finish designed to run cooler, this hole saw is built to deliver consistent, reliable performance on the jobsite across every diameter in the lineup. Whether you're boring through wood studs, steel panels, or plastic enclosures, the Greenlee 8251 is a dependable choice for getting the job done efficiently and accurately.