Starrett 00491 Hole Saw 1-3/4 in Hss Toothed Edge

Product Description

The STARRETT 00491 is a high speed steel hole saw designed for cutting clean, accurate holes in metal, steel, and wood. With a 1-3/4 inch saw diameter and a 1-5/8 inch cutting depth, it handles a wide range of trade applications where precise hole sizing matters. The toothed cutting edge runs at a constant pitch of 5.5 teeth per inch, delivering consistent chip removal and controlled cutting action. Licensed tradespeople and skilled DIYers working in HVAC, plumbing, electrical, and general construction rely on this type of saw for conduit knockouts, pipe penetrations, and panel openings.

This hole saw is suited for residential and light commercial work wherever holes must be cut through metal panels, steel framing, wood studs, or similar materials. Its 1-3/4 inch diameter makes it a common choice for standard conduit and pipe rough-in work. The high speed steel construction holds an edge under repeated use across mixed-material applications, reducing the need for frequent blade changes on multi-penetration jobs.

Key Features

• 1-3/4 inch saw diameter for standard conduit and pipe penetrations
• 1-5/8 inch cutting depth accommodates typical panel and stud thicknesses
• High speed steel construction for durability across metal, steel, and wood
• Constant pitch toothed edge at 5.5 TPI for consistent, clean cuts
• Compact profile — 1.8 inches wide by 1.8 inches long by 1.6 inches tall

Compatibility

Designed as an OEM-style replacement hole saw compatible with standard arbors accepting 1-3/4 inch hole saw bodies. Suitable for use on metal, steel, and wood material applications.

Installation Notes

Installation of this hole saw requires a compatible arbor and a drill or drill press capable of accepting the arbor shank. Secure the workpiece before cutting to prevent movement and reduce the risk of blade binding. Disconnect power to any panel or equipment before cutting into energized enclosures. Follow applicable NEC or trade-specific codes when cutting penetrations in electrical, HVAC, or plumbing applications.