Greenlee 34A Self-Feeding Spad...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.53
Greenlee 34A Self-Feeding Spade Bit, Hexagonal Shank

Greenlee 34A Self-Feeding Spade Bit, Hexagonal Shank

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Model: 34A-1/2

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

$8.53
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Greenlee 34A Self-Feeding Spade Bit, Hexagonal Shank

The Greenlee 34A Self-Feeding Spade Bit is a forged and heat-treated boring bit built for electricians, carpenters, and tradespeople who need to cut clean holes through hardwood, softwood, plywood, and drywall. This family is available in cutting diameters ranging from 1/2" to 7/8", and every size shares the same 1/4 IN (6.4 mm) quick-change hexagonal shank for use in 1/4 IN (6.4 mm) or larger power drills. Its innovative self-feeding design pulls the bit into the work material, requiring less operator effort and reducing vibration during use, which helps improve control and reduce fatigue on long jobs. Whether you select the 1/2" or the 7/8" size, you get the same forged-steel durability and thoughtful design details that make this bit a job-site staple.

Key Features

  • Available Sizes: Offered in 1/2" and 7/8" cutting diameters to suit a range of boring needs.
  • Shank Size: 1/4 IN (6.400 MM) hexagonal shank for compatibility with 1/4 IN or larger power drills.
  • Quick-Change Design: 1/4 IN quick change hex shank allows fast bit swaps without a chuck key.
  • Durable Construction: Forged Steel, heat treated for long life and consistent performance under repeated use.
  • Self-Feeding Design: Innovative self-feeding tip requires less effort and reduces vibration while boring.
  • Tapered Profile: Unique tapered design allows enlargement of existing holes without starting a new bore.
  • Wire-Pulling Hole: Hole in top center of bit accommodates wire pulling after the hole is bored, useful for electrical rough-in work.
  • Multi-Material Boring: Bores hardwood, softwood, plywood, and drywall for versatile job site use.

Technical Specifications

  • Product Subgroup: Hole Saws & Bits
  • Product Material: Forged Steel
  • Available Sizes: 1/2", 7/8"
  • Shank Size: 1/4 IN (6.400 MM)
  • Shank Type: Hexagonal
  • Type: Self Feeding

Typical Applications

  • Boring Hardwood, Softwood, Plywood, and Drywall
  • Electrical Rough-In Wire Pulling Through Framing
  • Enlarging Existing Bored Holes
  • Residential and Commercial Carpentry Work
  • General Job Site Drilling with 1/4 IN or Larger Power Drills

Why Greenlee?

Greenlee builds job-ready tools engineered for the demands of professional trades, and the 34A Self-Feeding Spade Bit family is forged from steel and heat treated for long-lasting performance on the job site. The self-feeding design, tapered profile, and integrated wire-pulling hole reflect thoughtful engineering aimed at reducing operator effort while improving productivity across both the 1/2" and 7/8" sizes. For electricians and contractors who need dependable boring performance across multiple materials and hole diameters, Greenlee delivers a tool built to hold up to repeated use.

Manufacturer Resources

Product Specs

list_batch:
GREE-20260923
Product Type:
Spade Bit
Configuration:
Hexagonal Shank
Connection Type:
Hexagonal
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Material:
Forged Steel
Product Group:
Power Tools & Accessories

Greenlee 34A-1/2 – Frequently Asked Questions

1) Will the Greenlee 34A spade bit fit a cordless impact driver?
The 34A uses a 1/4 inch (6.4 mm) quick-change hexagonal shank, so it drops into a standard 1/4 inch hex quick-change holder without a chuck key. Greenlee calls for a 1/4 inch or larger power drill. The hex shank also seats fine in a three-jaw keyed or keyless chuck if that is what you have on the truck.
2) Can I use a spade bit like this to enlarge a hole I already drilled?
Yes. The 34A has a tapered profile specifically so it can open up an existing bored hole rather than needing a fresh start with a center point biting into solid wood. That is the usual weak spot with a flat spade bit, and it is why the 34A is worth keeping in the pouch when you are upsizing a 1/2 inch stud hole to 7/8 inch.
3) What is the hole in the middle of the Greenlee 34A bit for?
That hole in the top center is a wire-pulling hole. On electrical rough-in, you bore the stud or joist, hook your wire through the hole in the bit, and pull it back through the opening in one motion instead of fishing it separately. It is the detail that makes this an electrician's bit rather than a general carpentry one.
4) Will a Greenlee 34A spade bit go through hardwood, or is it only for softwood framing?
Forged steel, heat treated, and rated for hardwood, softwood, plywood and drywall. The self-feeding tip pulls the bit into the material so you push less and the bit chatters less, which matters most in hardwood where a plain spade bit wants to skate.
5) Should I use a self-feeding spade bit or an auger bit for boring studs?
A self-feeding spade bit like the 34A is the fast, light option for 1/2 to 7/8 inch holes through framing, plywood and drywall, and the 1/4 inch hex shank means it swaps in seconds on a quick-change holder. An auger bit is what you reach for when you need deeper bores through stacked members or heavy timber and want the chips cleared out of the flutes. For routine rough-in through single studs and plates, the spade bit is less weight and less effort.
How fast can I get the Greenlee 34A-1/2 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 34A-1/2 come with a warranty?
Absolutely. The Greenlee 34A-1/2 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 34A-1/2?
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 34A-1/2 from ZenSupply?
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