Starrett 56759 Hole Saw Arbor Straight Hex Shank

Product Description

The STARRETT 56759 is a hole saw arbor designed to connect compatible hole saws to a drill or driver using a straight, hex-cross-section shank measuring 7/16 inch. It accepts attachment via a threaded shank interface and includes an integral carbide-tipped pilot drill to keep the saw centered during cut entry. The arbor body is constructed from stainless steel for corrosion resistance and durability under repeated use. This style of arbor is a standard consumable in the tool kits of plumbers, electricians, HVAC techs, and general contractors who regularly cut holes through wood, drywall, and light metal.

The 56759 is suited for professional trade work where frequent hole-saw changes and reliable concentricity matter. The carbide-tipped pilot extends service life compared to standard high-speed steel pilots, making it appropriate for abrasive or composite substrates. Minimum tool diameter compatibility starts at 1-1/4 inches. Compatible with SH, DH, CT, and D series hole saws from STARRETT, as stated in product specifications.

Key Features

• Straight shank with hex cross-section (7/16 inch) for positive grip in standard drill chucks and hex-drive systems
• Threaded shank attachment method secures the hole saw firmly to prevent slippage under load
• Integral carbide-tipped pilot drill extends pilot life on abrasive and composite materials
• Stainless steel arbor body resists corrosion in wet or outdoor service conditions
• Compatible with SH, DH, CT, and D series hole saws — broad tool-family coverage
• Minimum hole saw diameter compatibility of 1-1/4 inches

Compatibility

Designed for use with STARRETT SH, DH, CT, and D series hole saws. Minimum compatible hole saw diameter is 1-1/4 inches. Verify thread pitch and shank diameter match your existing hole saw and drill before installation.

Installation Notes

Installation is performed by trade professionals including electricians, plumbers, and HVAC technicians as part of standard hole-cutting operations. Ensure the drill or driver is powered off and unplugged before threading the hole saw onto the arbor. Thread the hole saw fully onto the arbor until snug and confirm the pilot drill is secure before beginning a cut. Inspect the carbide pilot tip for wear or damage before each use session.