Greenlee 50371550 Hex Shank Arbor with High-Speed Steel Pilot Drill Bit

Greenlee 50371550 Arbor with Replacement High-Speed Steel Pilot Drill Bit, Hex Shank

The Greenlee 50371550 is a replacement arbor and pilot drill bit assembly engineered to keep Greenlee hex-shank hole-cutting tools performing at full capacity. Built with a high-speed steel pilot drill bit, a 7/16 IN (11.100 MM) shank diameter, and a minimum chuck size of 1/2 IN (12.700 MM), this arbor delivers a precise, secure fit for repeated pilot-hole drilling without the expense of replacing an entire cutter set. The 1/2/17 thread size allows the arbor to thread directly onto compatible Greenlee cutter bodies, ensuring accurate alignment and dependable performance during knockout and hole-cutting operations. This drop-in replacement part is a practical solution for electricians, contractors, and maintenance technicians who need to extend the service life of their existing Greenlee tooling.

Key Features

• Hex Shank Design: Hex shank configuration provides secure engagement with compatible drill chucks and drivers for slip-free operation.
• High-Speed Steel Pilot Drill Bit: High-speed steel construction provides durable, wear-resistant performance for repeated pilot-hole drilling in metal and enclosure fabrication.
• Shank Diameter: 7/16 IN (11.100 MM) shank diameter for compatibility with standard chuck sizes on drivers and drill motors.
• Minimum Chuck Size: 1/2 IN (12.700 MM) minimum chuck size ensures proper tool compatibility and stable operation.
• Thread Size: 1/2/17 thread size for secure, accurate attachment to compatible Greenlee cutter assemblies.
• Compact Dimensions: Measures 6.000 IN in length, 1.700 IN in width, and 1.200 IN in height for easy handling and storage in service kits.
• Standard Pack: Packaged as a Standard Pack for straightforward replacement part ordering and inventory management.

Technical Specifications

• Country Of Origin: US
• Minimum Chuck Size: 1/2 IN (12.700 MM)
• Package: Standard Pack
• Product Height: 1.200 IN
• Product Length: 6.000 IN
• Product Material: High Speed Steel Pilot Drill Bit
• Product Type: Hex Shank
• Product Width: 1.700 IN
• Shank Diameter: 7/16 IN (11.100 MM)
• Thread Size: 1/2/17
• Volume: 12.24 CI

Typical Applications

• Replacement Part for Greenlee Hole-Cutting and Knockout Tools
• Electrical Panel and Enclosure Fabrication
• Conduit and Box Knockout Drilling
• Commercial and Industrial Electrical Installations
• Tool Maintenance and Service Kits

Why Greenlee?

Greenlee arbors and pilot drill bits are engineered with high-speed steel construction to deliver dependable performance for professional electrical and maintenance work. This replacement part lets you extend the service life of your existing Greenlee tooling with a precise, compatible fit rather than replacing the full cutter assembly. Backed by Greenlee's reputation for durable, code-compliant tool components, the 50371550 is a practical choice for keeping hole-cutting equipment ready for the job site.