Greenlee 50371550 Hex Shank Ar...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$82.46
$32.46
Greenlee 50371550 Arbors with Replacement High-Speed Steel Pilot Drill Bits

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

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Model: 50371550
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$82.46
$32.46
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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.

Manufacturer Resources

Product Specs

Country Of Origin:
United States
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:
Hole Saw Arbor
Product Width:
1.700 IN
Shank Diameter:
7/16 IN (11.100 MM)
Thread Size:
1/2/17
Volume:
12.239999999999998 CI
Department:
Electrical
Product Subgroup:
Hole Saws & Bits
Product Group:
Power Tools & Accessories

Greenlee 50371550 – Frequently Asked Questions

1) Will the Greenlee 50371550 arbor thread onto my Greenlee hole cutter?
The 50371550 arbor uses a 1/2/17 thread size, so it threads onto Greenlee cutter bodies cut for that thread. Match the thread on the cutter you already own before ordering; if your cutter uses a different thread, this arbor will not seat and align the pilot bit correctly.
2) Can I buy just the pilot drill bit and arbor instead of a whole new Greenlee cutter set?
That is exactly what the 50371550 is for. It is a replacement arbor and high-speed steel pilot drill bit assembly, so when the pilot bit dulls or snaps you replace the arbor assembly rather than the full cutter set. Useful line item to keep in a service kit for crews running knockout and hole-cutting work.
3) Is the hex shank on this arbor going to slip in the chuck when cutting steel enclosures?
The hex shank is the point of it. A 7/16 inch hex flat gives the chuck jaws something to bite against instead of a round shank that can spin under the torque of cutting panel and enclosure steel. The pilot bit itself is high-speed steel, which is what holds an edge through repeated pilot holes in sheet metal.
4) Is this Greenlee arbor a knockout punch part or a hole saw part?
It is the arbor and pilot drill for hex-shank hole-cutting tooling, driven by a drill motor. It centers and starts the cut; it is not a draw stud or ram component for a hydraulic knockout punch set. If you are replacing a part on a hydraulic punch driver, this is not the piece you want.
5) What is the Greenlee 50371550 part number and MPN for ordering?
Greenlee manufacturer part number 50371550, sold as a single Standard Pack arbor with pilot drill bit. Country of origin is the US. One model only, so there is no size or finish choice to specify on the order.
6) How long is the Greenlee 50371550 arbor assembly? I need it to clear inside a panel.
It measures 6.000 IN in length, with width of 1.700 IN and height of 1.200 IN. Factor the 6 inch length plus your drill body when working inside a tight enclosure or between studs, since that is the stack-up that decides whether you can get square to the work.
How fast can I get the Greenlee 50371550 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Greenlee 50371550 come with a warranty?
Absolutely. The Greenlee 50371550 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Greenlee 50371550?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Greenlee 50371550 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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