Starrett 56615 Hole Saw Arbor Straight Shank Pilot Drill

Product Description

The STARRETT 56615 is a hole saw arbor designed to connect hole saws to a drill or drill press for clean, controlled cutting. It features a straight hex shank measuring 11/32 inches and attaches via a threaded shank method. The arbor and integral pilot drill are both constructed from stainless steel, providing corrosion resistance and durability under repeated use. Maximum chuck size compatibility is 3/8 inch. This arbor is suited for electricians, plumbers, HVAC technicians, and general tradespeople who regularly cut holes in wood, metal, or similar substrates using interchangeable hole saw systems.

This arbor is intended for use with SH, DH, CT, and D series hole saws with a minimum tool diameter compatibility of 1-1/4 inches. It fits standard 3/8-inch chuck drills, making it compatible with a wide range of portable and bench-mounted drill equipment commonly found in trade and light industrial settings. The threaded shank attachment provides a secure, positive connection between the arbor and the hole saw cup, reducing wobble during cutting operations.

Key Features

• Straight hex shank at 11/32 inches for secure drill chuck grip
• Threaded shank attachment method for positive hole saw engagement
• Stainless steel arbor body and integral pilot drill for corrosion resistance
• Compatible with SH, DH, CT, and D series hole saws
• Maximum chuck size of 3/8 inch fits most standard portable drills
• No Weldon flat — straight hex profile throughout

Compatibility

Compatible with SH, DH, CT, and D series hole saws with a minimum tool diameter of 1-1/4 inches and a maximum chuck size of 3/8 inch.

Installation Notes

Installation is typically performed by the tradesperson using the hole saw system. Before attaching or removing the arbor, ensure the drill is powered off and the chuck is fully released. Thread the hole saw cup securely onto the arbor before inserting the shank into the drill chuck, and tighten the chuck firmly to prevent slippage during cutting. Inspect the pilot drill for straightness and secure engagement before each use.