Starrett 65639 Carbide Tipped Hole Saw 4-1/4 Inch

Product Description

The STARRETT 65639 is a carbide-tipped hole saw designed for cutting through tough materials that standard bi-metal saws struggle with. At 4-1/4 inches in diameter and 1-5/8 inches in cut depth, it handles full-depth cuts through thick substrates in a single pass. The toothed cutting edge with a constant pitch pattern produces clean, consistent holes. It is commonly used by trade professionals working in construction, renovation, and mechanical installation where hard or abrasive materials are part of the job. No arbor is included with this saw, so a separately sourced arbor is required before use.

This hole saw is rated for use in fiberglass, Formica, masonry brick, MDF, plaster, and suspended flooring materials. It suits applications where electricians, plumbers, HVAC technicians, and general contractors need to cut access holes, fixture openings, or pipe penetrations through non-metallic and composite substrates. The 4-1/4 inch diameter is a common size for larger pipe penetrations and access panel cutouts in residential and light commercial construction.

Key Features

• Carbide-tipped teeth for durability in abrasive and hard materials
• 4-1/4 inch saw diameter for large-diameter hole cutting in a single pass
• 1-5/8 inch cut depth handles thick panels and layered substrates
• Constant pitch pattern for smooth, consistent cutting action
• Toothed cutting edge reduces chipping on hard or brittle surfaces
• Non-arbored design allows compatibility with your existing arbor setup

Compatibility

Rated for use in fiberglass, Formica, masonry brick, MDF, plaster, and suspended floor materials. Requires a separately sourced arbor. Verify arbor shank size matches your drill driver before installation.

Installation Notes

This saw is installed by a licensed tradesperson or qualified installer using a standard drill or drill press fitted with a compatible arbor. Ensure the arbor is fully secured and the pilot bit is properly seated before starting the cut. Wear appropriate eye protection and dust control measures when cutting masonry, MDF, or fiberglass, as these materials produce fine particulate. Do not exceed the rated cutting depth in a single plunge on hard materials.