Starrett 55144 Hole Saw Arbor Straight Shank Pilot Drill

Product Description

The STARRETT 55144 is a straight-shank hole saw arbor designed to connect hole saws to standard drills and drill presses via a threaded shank attachment. The arbor features a 1/4 inch hex cross-section shank and includes an integral pilot drill for accurate hole positioning and reduced bit walking during cut entry. Both the arbor body and pilot are constructed from stainless steel for corrosion resistance and durability under repeated use. This arbor is installed by electricians, plumbers, HVAC technicians, and general contractors when drilling through wood, light metal, or plastic with hole saw accessories.

The 55144 is suited for use in residential and commercial construction and service applications where hole saws are needed to cut conduit knockouts, pipe penetrations, or access openings. It accepts a minimum tool diameter compatibility of 9/16 inch and is compatible with SH, DH, CT, and D series hole saws. The threaded shank attachment method ensures a secure, repeatable connection between the arbor and the saw body, reducing the risk of separation under load.

Key Features

• 1/4 inch hex shank for secure chuck engagement in standard drills and drill presses
• Integral stainless steel pilot drill for accurate hole centering and reduced bit walking
• Threaded shank attachment method for a firm, reliable connection to compatible hole saws
• Stainless steel arbor body resists corrosion in wet or humid work environments
• Compatible with SH, DH, CT, and D series hole saws with minimum 9/16 inch diameter
• No Weldon flat — compatible with standard keyless and keyed chucks

Compatibility

Designed for use with STARRETT SH, DH, CT, and D series hole saws with a minimum tool diameter of 9/16 inch. Uses a threaded shank attachment method.

Installation Notes

Installation is performed by the trade professional using the hole saw for the given application. Secure the hex shank fully into the drill chuck before use and verify the threaded connection to the hole saw is tight before beginning a cut. Always disconnect power from the drill or drill press before changing arbors or hole saw accessories. Follow applicable worksite safety guidelines when drilling through structural or load-bearing materials.