Greenlee 50309358 Nail Eater E...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$174.91
$124.91
Greenlee 50309358 Nail Eater Extreme

Greenlee 50309358 Nail Eater Extreme Auger Bit, 1-1/8 IN Heat Treated Steel

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Model: 50309358
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$174.91
$124.91
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Greenlee 50309358 Nail Eater Extreme Auger Bit, 1-1/8 IN Heat Treated Steel

The Greenlee 50309358 Nail Eater Extreme Auger Bit is a heavy-duty boring bit built from heat treated steel for electricians and contractors who drill through wood framing that may contain embedded nails and hardware. With a bit diameter of 1-1/8 IN (28.600 MM), an overall length of 18.000 IN (457.200 MM), and a twist length of 15.000 IN (381.000 MM), this bit is designed for deep, fast boring runs through studs, joists, and plates during rough-in wiring installations. The hexagonal shank measures 7/16 IN (11.100 MM) in diameter, matching standard high-torque drill chucks and impact-ready drivers for secure, slip-resistant power transfer. Manufactured in the US, the Nail Eater Extreme is engineered to hold up under repeated contact with concealed fasteners without shattering or dulling like conventional wood bits.

Key Features

  • Bit Diameter: 1-1/8 IN (28.600 MM) for boring clean, properly sized holes for cable and conduit runs.
  • Overall Length: 18.000 IN (457.200 MM) reaches through thick framing members and multiple stud bays in a single pass.
  • Twist Length: 15.000 IN (381.000 MM) of flute keeps chips clearing efficiently across deep bores.
  • Durable Construction: Heat Treated Steel body resists chipping and wear when the bit contacts embedded nails or hardware.
  • Hexagonal Shank: 7/16 IN (11.100 MM) shank diameter provides a secure, non-slip fit in drill and impact driver chucks.
  • Compact Profile: Product dimensions of 17.900 IN length, 1.500 IN width, and 0.200 IN height keep the bit maneuverable in tight framing bays.
  • Volume: 5.37 CI of material provides a robust, heavy-duty cutting head built for repeated professional use.

Technical Specifications

  • Bit Diameter: 1-1/8 IN (28.600 MM)
  • Country Of Origin: US
  • Overall Length: 18.000 IN (457.200 MM)
  • Product Height: 0.200 IN
  • Product Length: 17.900 IN
  • Product Material: Heat Treated Steel
  • Product Width: 1.500 IN
  • Shank Diameter: 7/16 IN (11.100 MM)
  • Shank Type: Hexagonal
  • Twist Length: 15.000 IN (381.000 MM)
  • Volume: 5.37 CI

Typical Applications

  • Electrical Rough-In Wiring Installations
  • Boring Through Wood Studs, Joists, and Plates
  • Drilling in Framing With Embedded Nails or Hardware
  • New Construction and Remodel Wiring Projects
  • Cable and Conduit Pathway Boring

Why Greenlee?

Greenlee builds the Nail Eater Extreme from heat treated steel specifically to survive the nail strikes and hardware impacts that destroy standard auger bits on the jobsite. The hexagonal 7/16 IN shank and long 15.000 IN twist length are engineered for professional electricians who need dependable, repeat-use boring performance through framing lumber. Manufactured in the US, this bit is built for the demanding, high-volume drilling that electrical contractors rely on daily.

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Manufacturer Resources

Product Specs

Bit Diameter:
1-1/8 IN (28.600 MM)
Country Of Origin:
US
Overall Length:
18.000 IN (457.200 MM)
Product Height:
0.200 IN
Product Length:
17.900 IN
Product Material:
Heat Treated Steel
Product Type:
Extreme
Product Width:
1.500 IN
Shank Diameter:
7/16 IN (11.100 MM)
Shank Type:
Hexagonal
Sub Brand:
Nail Eater
Twist Length:
15.000 IN (381.000 MM)
Volume:
5.37 CI
Department:
Electrical
Product Subgroup:
Hole Saws & Bits

Greenlee 50309358 – Frequently Asked Questions

1) How deep can the Greenlee 50309358 auger bit bore through a wall?
Overall length is 18 inches with 15 inches of that being twist, so the usable boring depth is the 15 inch flute length. That covers drilling through doubled or tripled studs and top plates in one pass. For deeper runs you need a bit extension or a longer bit.
2) Can this Greenlee auger bit go through nails in old framing?
That is what the Nail Eater line is built for. The bit is heat treated steel, so it survives hitting embedded nails and screws in remodel framing rather than chipping out like a standard wood auger. Still expect the cutting edge to dull faster on repeated nail strikes.
3) What part number do I order for the 1-1/8 inch 18 inch Nail Eater Extreme?
Order Greenlee MPN 50309358. It ships as a single bit, 1-1/8 inch diameter, 18 inches overall, 7/16 inch hex shank. Nothing else is included, so an extension or a different diameter is a separate order.
4) Is the Greenlee Nail Eater Extreme made in the USA?
Country of origin on the 50309358 is the US. Worth noting for anyone buying under domestic sourcing requirements on a public job.
How fast can I get the Greenlee 50309358 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 50309358 come with a warranty?
Absolutely. The Greenlee 50309358 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 50309358?
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 50309358 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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