Irwin 373003 Hole Saw Mandrel 3/8 in Hex Shank 1-1/4 to 6 in

Product Description

The IRWIN 373003 is a hole saw mandrel designed to drive hole saws ranging from 1-1/4 inches to 6 inches in diameter. The mandrel features a 3/8 inch hex shank that seats securely in standard drill chucks, transferring torque to the saw without slippage. At 0.48 pounds, it is lightweight enough for extended overhead or side-wall drilling without adding fatigue. Electricians, plumbers, HVAC techs, and general contractors rely on this type of mandrel when boring large-diameter holes through wood, drywall, and light-gauge materials during rough-in and fixture installation.

This mandrel is suited for residential and light commercial trade work where a wide range of hole saw sizes must be run from a single driver. The 1-1/4 to 6 inch compatibility range covers common trade applications including electrical box cutouts, plumbing stub-out holes, HVAC duct penetrations, and lockset bores. The 3/8 inch hex shank fits standard 3/8 inch and 1/2 inch drill chucks commonly found on corded and cordless drills used in the field.

Key Features

• 3/8 inch hex shank for secure, no-slip engagement in standard drill chucks
• Accepts hole saws from 1-1/4 inches to 6 inches in diameter
• Lightweight at 0.48 pounds, reducing fatigue during extended use
• Wide size range covers most common trade boring applications in a single mandrel
• Sold individually — minimum order quantity of 5 units per order

Compatibility

Designed for use with hole saws measuring 1-1/4 inches to 6 inches in diameter. Compatible with standard 3/8 inch and 1/2 inch drill chucks on corded and cordless drills.

Installation Notes

Install the hole saw onto the mandrel arbor and tighten the setscrew firmly before use. Insert the 3/8 inch hex shank into the drill chuck and tighten securely. Always wear eye protection and secure the workpiece before drilling. Follow applicable safety guidelines for the material being cut.

Technical Specifications

• Shank Size: 3/8 inch hex
• Compatible Hole Saw Range: 1-1/4 inches to 6 inches diameter
• Weight: 0.48 pounds
• UPC: 024721016607
• Sold As: Each

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: 373003