Starrett 00443 Hole Saw 2.5 in Hss Variable Pitch

Product Description

The STARRETT 00443 is a high speed steel (HSS) hole saw designed for cutting through metal, steel, and wood. With a 2.5-inch saw diameter and a 2-inch cutting depth, it handles a wide range of hole-cutting tasks on the jobsite or in the shop. The toothed cutting edge runs a variable pitch pattern of 4 to 6 teeth per inch, which helps reduce vibration and chip load when transitioning between material thicknesses. This saw is a direct-use cutting tool installed by HVAC technicians, plumbers, electricians, and general tradespeople whenever a clean, full-diameter hole is needed through structural or finish materials.

The 00443 is suited for residential and light commercial trade work where holes must be cut through metal ductwork, electrical enclosures, wood framing, or similar substrates. Its 2-inch cutting depth accommodates standard framing lumber and moderate-gauge sheet metal. The variable pitch tooth geometry makes it a practical single-tool choice across mixed-material applications rather than requiring separate saw selections for each substrate type.

Key Features

• 2.5-inch saw diameter for full-size trade hole cuts in ductwork, panels, and framing
• 2-inch cutting depth handles standard lumber and stacked sheet materials
• High speed steel construction provides durability across metal and wood cuts
• Variable pitch tooth pattern (4 to 6 TPI) reduces vibration and improves chip clearance
• Toothed cutting edge for clean, defined hole perimeters

Compatibility

Designed as a replacement-style hole saw compatible with standard arbors accepting 2.5-inch HSS hole saw bodies. Suitable for cutting metal, steel, and wood as noted in product specifications.

Installation Notes

This hole saw is installed by licensed tradespeople including electricians, HVAC techs, and plumbers during rough-in and service work. Secure the appropriate arbor and pilot bit before use, and confirm the arbor is fully seated and locked. Always power down electrical circuits and de-energize equipment before cutting into panels or enclosures. Wear appropriate eye and hand protection, as HSS hole saws generate heat and metal burrs during use.