Greenlee 1/4" Cobalt Steel Pil...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$71.21
$19.08
Greenlee 1/4" Cobalt Steel Pilot Drill Bit with Split-Point Tip

Greenlee 1/4" Cobalt Steel Pilot Drill Bit with Split-Point Tip

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Model: 645-001
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$71.21
$19.08
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Greenlee 1/4" Cobalt Steel Pilot Drill Bit with Split-Point Tip

Professional Precision Drilling for Arbor Applications

The Greenlee 1/4" Cobalt Steel Pilot Drill Bit delivers professional-grade performance for use with Greenlee arbors ranging from 5/8" to 2-1/4". Engineered with cobalt steel construction and featuring an innovative split-point tip design, this pilot drill eliminates the need for center punching while providing superior resistance to walking during drilling operations.

Professional Features & Benefits

  • 1/4" Diameter: Optimal size for pilot hole applications with Greenlee arbor systems, ensuring precise hole placement and clean drilling performance.
  • Cobalt Steel Construction: Superior material hardness and heat resistance for extended tool life and consistent performance in demanding drilling applications.
  • Split-Point Tip Design: Eliminates walking and reduces the need for center punching, providing immediate drilling accuracy and improved productivity.
  • Arbor Compatibility: Specifically designed for use with Greenlee arbors 5/8" to 2-1/4", ensuring proper fit and optimal drilling performance.
  • Professional Grade Quality: Greenlee engineering standards deliver reliable performance for professional electrical and construction applications.

Technical Specifications

  • Bit Diameter: 1/2 IN
  • Country Of Origin: China
  • Product Material: Cobalt Steel
  • Product Type: Pilot drill bit

Professional Applications

  • Electrical Panel Installation
  • Conduit and Junction Box Mounting
  • Commercial Construction Projects
  • Industrial Maintenance Operations
  • Professional Electrical Contracting
  • Precision Drilling Applications

Why Choose Greenlee Quality?

Greenlee delivers professional-grade tools engineered for reliability and durability in demanding work environments. The cobalt steel construction and precision split-point design ensure consistent performance and extended tool life, making this pilot drill bit a trusted choice for professional electricians and contractors.

Manufacturer Resources

Product Specs

Bit Diameter:
1/2 IN
Product Material:
Cobalt Steel
Product Type:
Pilot Drill Bit
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Group:
Power Tools & Accessories

Greenlee 645-001 – Frequently Asked Questions

1) Which Greenlee arbors does the 645-001 pilot drill fit?
The 645-001 pilot drill is made for Greenlee arbors in the 5/8 inch through 2-1/4 inch range. If your arbor falls in that span, the pilot seats correctly and centers the cutter; outside that range you need the pilot specified for that arbor instead.
2) Do I need to center punch before drilling with the Greenlee 645-001 pilot bit?
No. The split-point tip bites immediately and resists walking, so center punching is not required. That matters on enclosure covers and panel backs where a punch mark is awkward to place and the hole position has to be exact.
3) Is the Greenlee 645-001 pilot drill hard enough for steel enclosures and junction boxes?
It's cobalt steel, which holds its edge at the higher temperatures you get cutting sheet steel and enclosure bodies, so it stands up better than a plain HSS pilot in repeat panel and junction box work.
4) Is this pilot drill a standalone bit or a replacement part for a hole cutter setup?
It's a replacement pilot for an arbor-and-cutter assembly, not a general purpose twist drill. The pilot centers the cut and the arbor carries the hole cutter, so you order it when the original pilot is dull, snapped, or missing from a Greenlee arbor.
5) What part number do I order to get the Greenlee cobalt pilot drill, and where is it made?
Order Greenlee 645-001. It's manufactured in China and supplied as the pilot bit alone, so the arbor and cutter are separate line items if you don't already have them.
How fast can I get the Greenlee 645-001 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 645-001 come with a warranty?
Absolutely. The Greenlee 645-001 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 645-001?
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 645-001 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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