Greenlee 50309374 Nail Eater Extreme Auger Bit, 1-1/4 IN Heat Treated Steel

Greenlee 50309374 Nail Eater Extreme Auger Bit, 1-1/4 IN Heat Treated Steel

The Greenlee 50309374 Nail Eater Extreme is a heavy-duty auger bit engineered for electricians and installers who need to bore through wood framing members without slowing down for embedded fasteners. Part of Greenlee's Nail Eater® line, this bit features a 1-1/4 IN (31.800 MM) bit diameter, an 18.000 IN (457.200 MM) overall length, and a 15.000 IN (381.000 MM) twist length, giving installers the reach needed for deep stud and joist penetrations during rough-in wiring runs. Constructed from heat treated steel, the Nail Eater Extreme is built to hold an edge and resist the abuse of hidden nails, screws, and other metal fasteners commonly encountered in remodel and renovation work. The bit terminates in a 7/16 IN (11.100 MM) hexagonal shank, providing a secure, slip-resistant grip in compatible right-angle drills and drivers used throughout commercial and residential electrical installations.

Key Features

• Bit Diameter: 1-1/4 IN (31.800 MM) for boring clean, properly sized holes for conduit and cable runs.
• Overall Length: 18.000 IN (457.200 MM) allows deep penetration through thick framing and multiple stud bays.
• Twist Length: 15.000 IN (381.000 MM) flute length for efficient chip removal and reduced binding.
• Durable Construction: Heat treated steel body resists wear and impact damage from hidden nails and fasteners.
• Hexagonal Shank: 7/16 IN (11.100 MM) shank diameter for a secure, non-slip fit in right-angle drills.
• Compact Footprint: Product height of 1.600 IN and product length of 1.700 IN keep the cutting head maneuverable in tight joist and stud bays.
• Volume: 51.00000000000001 CI displacement rating reflects the aggressive cutting geometry of the auger design.

Technical Specifications

• Bit Diameter: 1-1/4 IN (31.800 MM)
• Overall Length: 18.000 IN (457.200 MM)
• Product Height: 1.600 IN
• Product Length: 1.700 IN
• Product Width: 18.750 IN
• Product Material: Heat Treated Steel
• Shank Diameter: 7/16 IN (11.100 MM)
• Shank Type: Hexagonal
• Sub Brand: Nail Eater®
• Twist Length: 15.000 IN (381.000 MM)
• Volume: 51.00000000000001 CI
• Country Of Origin: US

Typical Applications

• Electrical Rough-In and Cable Routing Through Framing
• Boring Through Wood Studs and Joists Containing Hidden Fasteners
• Commercial and Residential Wiring Installations
• Renovation and Remodel Electrical Work
• Conduit and Low-Voltage Cable Pathway Drilling

Why Greenlee?

Greenlee builds the Nail Eater Extreme from heat treated steel specifically to survive contact with concealed nails and metal fasteners that would destroy standard auger bits, keeping crews working instead of swapping out damaged tooling. The hexagonal shank design ensures a positive drive connection with right-angle drills, reducing slip and improving control during long boring runs. For electricians and contractors who need dependable, code-ready rough-in performance job after job, the Greenlee Nail Eater Extreme delivers the durability and cutting efficiency the trade demands, backed by a 1-1/4 IN cutting diameter and 18.000 IN reach purpose-built for demanding electrical rough-in work.