Starrett 65636 Hole Saw 3-3/4 in Carbide Tipped

Product Description

The STARRETT 65636 is a carbide-tipped hole saw designed for cutting clean, accurate holes through a wide range of hard and abrasive materials. With a 3-3/4 inch saw diameter and a 1-5/8 inch cutting depth, it handles thick substrates that standard bi-metal saws struggle with. The toothed cutting edge with a constant pitch pattern delivers consistent chip removal and reduces binding during the cut. It is used by electricians, plumbers, HVAC technicians, and general contractors who need a reliable hole saw for rough-in work and fixture installation across multiple material types.

This hole saw is suited for residential and commercial applications where penetrations through fiberglass, Formica, masonry brick, MDF, plaster, or suspended flooring are required. Typical install scenarios include cutting pipe and conduit penetrations, installing recessed fixtures, and creating access openings in composite or masonry surfaces. The 3-3/4 inch diameter is a common size for larger conduit knockouts, drain fittings, and duct penetrations. Note that this saw is not arbored, so a compatible separate arbor is required for use.

Key Features

• Carbide-tipped cutting edge for extended life in abrasive materials
• 3-3/4 inch saw diameter covers larger conduit, drain, and duct penetration sizes
• 1-5/8 inch cutting depth suitable for thick walls, floor panels, and masonry substrates
• Constant pitch toothed edge reduces vibration and delivers smooth, consistent cuts
• Non-arbored design allows pairing with a preferred or existing arbor setup
• Compatible with fiberglass, Formica, masonry brick, MDF, plaster, and suspended flooring

Compatibility

Designed for cutting fiberglass, Formica, masonry brick, MDF, plaster, and suspended floor materials. Requires a separate arbor for mounting to a drill. Verify arbor thread and shank compatibility before installation.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with rotary cutting tools and the substrate being cut. Secure the workpiece before beginning the cut to prevent movement and blade deflection. When cutting masonry or plaster, use appropriate eye and respiratory protection to guard against dust and debris. Always verify that a compatible arbor is properly threaded and secured before operating the hole saw.