Greenlee #8 Cobalt HSS Step Dr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$269.26
Greenlee #8 Cobalt HSS Step Drill Bit - 3-Stage Multi-Material Cutting Tool

Greenlee #8 Cobalt HSS Step Drill Bit - 3-Stage Multi-Material Cutting Tool

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Model: 30008C
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$269.26
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Greenlee #8 Cobalt HSS Step Drill Bit

Professional Multi-Material Cutting Performance

The Greenlee #8 Cobalt HSS Step Drill Bit delivers exceptional cutting performance across multiple materials with professional-grade cobalt high-speed steel construction. Engineered for maximum durability in stainless steel applications up to 10 gauge, this 3-stage step bit provides versatile cutting capability for mild steel, copper, brass, aluminum, fiberglass, plastic, wood, and laminates in a single tool.

Professional Features & Benefits

  • Cobalt HSS Construction: Engineered with cobalt high-speed steel material for maximum tool life and superior performance in demanding stainless steel applications.
  • 3-Stage Design: Multiple cutting stages provide progressive hole sizing and smooth material penetration for professional results.
  • Multi-Material Capability: Cuts through stainless steel up to 10 gauge plus mild steel, copper, brass, aluminum, fiberglass, plastic, wood, and laminates for versatile job site applications.
  • #8 Size Rating: Optimized diameter sizing for common electrical and mechanical installation requirements.
  • USA Manufacturing: Made in the United States ensuring consistent quality and reliable performance standards.
  • Power Tool Compatible: Designed as a professional power tool accessory for efficient drilling operations.

Technical Specifications

  • Country Of Origin: United States
  • Number Of Drill Stages: 3
  • Product Type: Cobalt Step Bit

Installation & Operation

  1. Mount the step bit securely in a compatible power drill or driver with appropriate chuck capacity.
  2. Select appropriate drilling speed based on material type and thickness being cut.
  3. Position the bit perpendicular to the work surface and begin drilling at the smallest stage.
  4. Apply steady, controlled pressure allowing the cobalt HSS cutting edges to work efficiently.
  5. Progress through each stage as needed to achieve the desired hole diameter.
  6. Clear debris regularly and allow the bit to cool between heavy-duty applications for maximum tool life.

Professional Applications

  • Electrical panel and enclosure installations
  • HVAC ductwork and equipment mounting
  • Plumbing and mechanical system connections
  • Metal fabrication and sheet metal work
  • Industrial maintenance and repair operations
  • Commercial construction projects
  • Automotive and equipment service

Why Choose Greenlee Quality?

Greenlee power tool accessories are engineered for professional tradespeople who demand reliable performance and maximum tool life. This cobalt HSS step bit combines USA manufacturing quality with advanced metallurgy to deliver consistent cutting performance across multiple materials, making it an essential addition to any professional toolkit.

Manufacturer Resources

Spec Sheet

Product Specs

Country Of Origin:
United States
Number Of Drill Stages:
3
Product Type:
Step Drill Bit
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Group:
Power Tools & Accessories
Product Width:
3.6 in
Product Height:
1.4 in
Product Length:
7 in

Greenlee 30008C – Frequently Asked Questions

1) Will the Greenlee 30008C step bit cut stainless steel, or is it only for mild steel and aluminum?
Cobalt HSS is the reason to pick this one. The Greenlee #8 step bit (model 30008C) is rated for stainless steel up to 10 gauge, and it also cuts mild steel, copper, brass, aluminum, fiberglass, plastic, wood, and laminates. If you are only ever drilling mild steel or aluminum enclosures, a standard HSS or titanium-coated step bit will do the job; the cobalt grade earns its keep when stainless is in the mix.
2) How many hole sizes does the Greenlee #8 cobalt step bit drill?
Three. The #8 cobalt step bit is a 3-stage design, so one bit gives you three progressive hole diameters without swapping tools. You start at the smallest step and work down through the stages until the hole matches the connector or fastener you are setting.
3) How do I order the right Greenlee cobalt step bit and confirm I have the #8?
The part to specify is Greenlee 30008C, the #8 cobalt step bit. The "C" denotes the cobalt HSS version rather than a plain HSS bit, so quote that full number if stainless capability is part of your spec.
4) Do I need a special drill to run this Greenlee step bit, or will a standard cordless drill work?
Any power drill or driver with a chuck that accepts the shank will run it. The #8 cobalt step bit is a power tool accessory, mounted in the chuck and run perpendicular to the work surface. Match the speed to the material and clear chips as you go, and let the bit cool between heavy cuts in steel. Hand drilling is not what it is built for.
5) Is the Greenlee 30008C step bit made in the USA?
Yes, the Greenlee #8 cobalt step bit is manufactured in the United States. That matters on government, institutional, and some utility jobs where domestic-origin tooling is a procurement requirement.
6) What jobs is the Greenlee #8 cobalt step bit actually used for on an electrical install?
It is aimed at punching clean holes in panels and enclosures for connectors and fittings, plus HVAC equipment mounting, plumbing and mechanical connections, sheet metal fabrication, and MRO repair work. The three stages let one bit serve several common conduit and connector sizes, which is why it lives in a service van rather than a shop drawer.
How fast can I get the Greenlee 30008C 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 30008C come with a warranty?
Absolutely. The Greenlee 30008C 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 30008C?
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 30008C 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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