Greenlee 5/8" Spade Bit with Wire Pulling Hole - Forged Heat Treated Construction
Professional drilling solution for electrical and construction applications
The Greenlee 5/8" Spade Bit delivers reliable performance for boring through hardwood, softwood, plywood, and drywall. Featuring forged and heat treated construction for extended service life, this professional-grade bit includes a convenient wire pulling hole in the top center for electrical installations. Compatible with 1/4" or larger power drills, this versatile drilling tool provides consistent results across multiple material types.
Professional Features & Benefits
- 5/8" Bit Diameter: Optimal size for standard electrical and construction boring applications with precise hole dimensions.
- Wire Pulling Hole: Center-positioned hole enables efficient wire routing during electrical installations, reducing installation time.
- Forged and Heat Treated Construction: Enhanced durability and extended tool life through professional-grade manufacturing processes.
- Multi-Material Compatibility: Effectively bores hardwood, softwood, plywood, and drywall for versatile job site applications.
- 1/4" Hexagonal Shank: Secure grip and compatibility with standard power drills and drill drivers.
- 6-1/4" Overall Length: Provides adequate reach for standard drilling depths while maintaining control and precision.
Technical Specifications
- Bit Diameter: 5/8 IN (15.900 MM)
- Overall Length: 6-1/4 IN (158.800 MM)
- Product Weight: 0.100 LB (45.300 GM)
- Shank Size: 1/4 IN (6.400 MM)
- Shank Type: Hexagonal
Installation & Operation
- Mount the bit securely in a 1/4" or larger power drill chuck, ensuring proper engagement with the hexagonal shank.
- Mark the desired hole location and ensure the work surface is properly secured and supported.
- Position the drill perpendicular to the work surface and begin drilling at moderate speed for optimal control.
- Apply steady, consistent pressure while allowing the bit to cut through the material at its designed rate.
- For wire pulling applications, utilize the center hole to route wiring through the drilled opening as needed.
- Clean the bit after use and store in a dry location to maintain the heat treated finish and cutting performance.
Professional Applications
- Electrical installations requiring wire routing holes
- Construction and remodeling projects
- Carpentry and woodworking applications
- Drywall and partition installations
- Maintenance and repair operations
- Professional contractor and tradesman use
Why Choose Greenlee Quality?
Greenlee delivers professional-grade tools engineered for demanding job site conditions. This spade bit’s forged and heat treated construction ensures reliable performance and extended service life, while the integrated wire pulling hole adds practical functionality for electrical applications. Trust Greenlee’s commitment to quality and durability for your professional drilling needs.
Manufacturer Resources
Spec Sheet
Product Specs
- Product Type:
- Spade Terminal
- Department:
- Electrical
- Shank Type:
- Hexagonal
- Shank Size:
- 1/4 IN (6.400 MM)
- Overall Length:
- 6-1/4 IN (158.800 MM)
- Product Subgroup:
- Hole Saws & Bits
Greenlee 33A-1/2 – Frequently Asked Questions
1) What sizes does the Greenlee 33A spade bit come in?
Four diameters: 1/2 inch (33A-1/2), 5/8 inch (33A-5/8), 3/4 inch (33A-3/4), and 7/8 inch (33A-7/8). All share the same 1/4 inch hexagonal shank, so one drill handles the whole range.
2) Will the Greenlee 33A spade bit fit my cordless drill?
It uses a 1/4 inch hexagonal shank, so it chucks into any 1/4 inch or larger power drill, and drops straight into a 1/4 inch hex quick-change chuck or impact driver collet.
3) What is the wire pulling hole on the Greenlee 33A spade bit for?
The hole sits in the top center of the bit's paddle. After you bore through a stud or joist, you feed the wire through that hole and pull the bit back out with the wire following it, so you drill and pull in one pass instead of fishing the wire separately.
4) How deep can I bore with a 6-1/4 inch spade bit like the Greenlee 33A?
Overall length is 6-1/4 inches (158.8 mm), and part of that is shank held in the chuck, so it is sized for single-member boring: one 2x4 or 2x6 stud, plywood, or drywall. For stacked plates or drilling from an angle where you need more reach, add a hex bit extension.
5) Can I use the Greenlee 33A spade bit on metal studs or masonry?
No. It is rated for hardwood, softwood, plywood, and drywall only. Steel studs, concrete, or block need a step bit, hole saw, or masonry bit instead.
6) Which spade bit size should an electrician pick for running NM cable through studs?
For a single run of residential NM cable, the 1/2 inch or 5/8 inch 33A covers it. Move up to 3/4 inch or 7/8 inch when you are stacking multiple cables through one bore or pulling larger conductors, since a wider hole reduces friction on the pull. All four sizes carry the same wire pulling hole and hex shank.
7) Is the Greenlee 33A a hardened bit or will the edges roll over on framing lumber?
The bit is forged and heat treated, which is what keeps the paddle edges and the center point holding up through repeated boring in hardwood and framing lumber rather than deforming.
8) Is the Greenlee 33A sold individually or as a set?
Each diameter is its own part number, ordered separately: 33A-1/2, 33A-5/8, 33A-3/4, and 33A-7/8. Order the sizes you need rather than expecting a boxed set.
How fast can I get the Greenlee 33A-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 33A-1/2 come with a warranty?
Absolutely. The Greenlee 33A-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 33A-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
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