Greenlee 50371576 Arbor with High-Speed Steel Pilot Drill Bit

Greenlee 50371576 Arbor with High-Speed Steel Pilot Drill Bit

The Greenlee 50371576 Arbor with Replacement High-Speed Steel Pilot Drill Bit is a tool replacement part engineered to restore cutting performance on Greenlee hole saw and knockout systems. Built with a round-with-3-flats shank configuration and a 1/4 IN (6.400 MM) shank diameter, this arbor accepts chucks with a minimum size of 1/4 IN (6.400 MM) and features a 1/2/17 thread size for secure mounting to compatible cutter bodies. Manufactured in the US, it ships as a Standard Pack unit measuring 6.150 IN in length, 1.650 IN in width, and 1.500 IN in height, giving electricians and installers a durable, precision-fit replacement without the cost of a full tool assembly. This part is designed for maintenance crews and electrical contractors who need to keep existing Greenlee cutting tools operational rather than purchasing an entirely new cutter body.

Key Features

• Shank Diameter: 1/4 IN (6.400 MM) shank for compatibility with standard drill chucks and drivers.
• Minimum Chuck Size: 1/4 IN (6.400 MM) minimum chuck size required for proper mounting and secure operation.
• Durable Construction: High-Speed Steel pilot drill bit material delivers heat resistance and extended cutting life during repeated boring applications.
• Configuration: Round with 3 flats design provides a positive, non-slip grip when torque is applied through the driving tool.
• Thread Size: 1/2/17 threading allows the arbor to mate securely with compatible Greenlee cutting attachments.
• Compact Dimensions: Measures 6.150 IN long, 1.650 IN wide, and 1.500 IN high, keeping the assembly manageable in tight job-site conditions.
• Packaging: Supplied as a Standard Pack for straightforward stocking and replacement on maintenance carts.
• Country of Origin: Manufactured in the US for consistent quality control.

Technical Specifications

• Country Of Origin: US
• Minimum Chuck Size: 1/4 IN (6.400 MM)
• Package: Standard Pack
• Product Height: 1.500 IN
• Product Length: 6.150 IN
• Product Material: High Speed Steel Pilot Drill Bit
• Product Type: Round With 3 Flats
• Product Width: 1.650 IN
• Shank Diameter: 1/4 IN (6.400 MM)
• Thread Size: 1/2/17
• Volume: 15.221 CI

Typical Applications

• Electrical Panel and Enclosure Knockout Cutting
• Hole Saw and Cutter Attachment Replacement
• Maintenance and Repair of Greenlee Cutting Tools
• Electrical Contractor and Installer Tool Kits
• Commercial and Industrial Wiring Installations

Why Greenlee?

Greenlee builds tool replacement parts like this arbor to the same precision standards as its original cutting tools, using High-Speed Steel construction for reliable pilot drilling performance. Manufactured in the US with a purpose-built round-with-3-flats shank and 1/2/17 thread interface, this arbor helps electrical professionals keep their existing Greenlee cutting equipment in service without replacing the entire tool. Choosing genuine Greenlee replacement parts supports consistent fit, dependable torque transfer, and long-term reliability on the job site, whether crews are cutting knockouts in panels and enclosures or maintaining a fleet of hole saw cutters used daily across commercial and industrial wiring installations.