Greenlee KD-1 1" Conduit Size ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$38.50
Greenlee KD-1 1" Conduit Size Knockout Die, Round

Greenlee KD-1 1" Conduit Size Knockout Die, Round

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Model: KD-1

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

$38.50
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Greenlee KD-1 1" Conduit Size Knockout Die, Round

The Greenlee KD-1 is a 1" conduit size round knockout die engineered for use with Greenlee battery-hydraulic knockout drivers, manual-hydraulic knockout drivers, and ratchet wrenches. Paired with Greenlee punches and draw studs, this die is optimized for the widest range of materials and drivers, cutting a precise 1.36" (34.6 mm) round opening sized for 1" conduit. Made in the USA, it delivers the accuracy and durability electrical and mechanical contractors depend on for clean, repeatable knockout holes.

Key Features

  • Trade Size: Sized for 1" conduit, producing a round knockout opening of 1.36" (34.6 mm) for accurate fit-up.
  • Material Versatility: Rated for use in mild steel, stainless steel, brass, copper, aluminum, fiberglass, and plastics, making it suitable across a wide range of enclosure and panel materials.
  • Optimized Design: Engineered for the widest range of materials and drivers, giving installers flexibility across job types and equipment setups.
  • Laser Markings: Permanent laser markings allow for quick, reliable part identification in the field.
  • Alignment Markings: Built-in alignment markings improve punch accuracy and help ensure a clean, centered knockout every time.
  • Shape: Round die profile designed for standard round conduit knockout applications.
  • Compatibility: Works with Greenlee battery-hydraulic knockout drivers, manual-hydraulic knockout drivers, ratchet wrenches, and Greenlee punches and draw studs.

Technical Specifications

  • Type: Knockout Die
  • Size: 1" Conduit (1.36" or 34.6 mm)
  • Shape: Round
  • Material: For use in mild steel, stainless steel, brass, copper, aluminum, fiberglass, and plastics
  • Capacity: Optimized for widest range of materials and drivers
  • Country of Origin: United States

Typical Applications

  • Cutting 1" conduit knockouts in electrical enclosures and panels
  • Fabrication work across steel, stainless steel, brass, copper, and aluminum panels
  • Fiberglass and plastic enclosure modifications
  • Field use with Greenlee battery-hydraulic and manual-hydraulic knockout drivers
  • Ratchet wrench knockout punching for panels and boxes

Why Greenlee?

Greenlee's KD-1 knockout die is built and made in the USA, with laser markings for fast part identification and alignment markings that improve punching accuracy. Its material versatility across steel, stainless steel, brass, copper, aluminum, fiberglass, and plastics, combined with compatibility across Greenlee's driver lineup, makes it a dependable choice for professional electrical and panel-fabrication work.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
GREE-20260923
Product Type:
Knockout Die
Country Of Origin:
United States
Department:
Electrical
Product Subgroup:
Knockout Punches
Product Material:
Steel
Product Size:
1"
Product Group:
Electrical Installation Tools
Product Width:
1.5 in
Product Height:
0.08 in
Product Weight:
0.61 lb

Greenlee KD-1 – Frequently Asked Questions

1) What size hole does the Greenlee KD-1 knockout die actually cut?
The KD-1 cuts a 1.36 inch (34.6 mm) round opening, which is the correct knockout size for 1 inch trade size conduit. If you need the hole to accept a 1 inch conduit connector or fitting, this is the die to use. The 1 inch marking refers to the conduit trade size, not the diameter of the cut.
2) Is a knockout die all I need, or do I have to buy a punch and draw stud too?
A die alone will not cut anything. The KD-1 is the die half of the set, and it works with Greenlee punches and draw studs plus a driver, either a battery-hydraulic or manual-hydraulic knockout driver or a ratchet wrench. If you are starting from nothing, order the matching 1 inch punch and a draw stud sized to your driver along with the die.
3) Can I use this knockout die on a stainless steel enclosure?
Yes. The KD-1 is rated for mild steel and stainless steel, as well as brass, copper, aluminum, fiberglass, and plastics, so one die covers painted steel panels, stainless wash-down enclosures, and non-metallic boxes. Stainless is the hardest of those, so use a hydraulic driver rather than a ratchet wrench where you have the choice.
4) Will the KD-1 fit my battery hydraulic knockout driver, or is it only for manual tools?
Both. The die is built for Greenlee battery-hydraulic drivers, manual-hydraulic drivers, and ratchet wrench setups, so a crew carrying a cordless punch kit and a shop with a hand pump can use the same die. The driver determines the draw stud you need, not the die.
5) How do I keep the punch centered so the hole does not come out crooked?
The KD-1 carries built-in alignment markings on the die face for lining the die up to your layout marks before you draw the punch through. Drill the pilot hole for the draw stud on center, seat the die against the back of the panel with the marks lined up, and the cut comes out centered. The die also has permanent laser markings so you can pick the right size out of a kit without measuring.
6) Is this die round or does it cut a square knockout?
Round only. The KD-1 produces a round profile knockout for standard round conduit entries. If you are punching a rectangular opening for a device, a pilot light bezel, or a plug receptacle cutout, a round die will not do it and you need a square or rectangular punch and die set instead.
7) Is the Greenlee KD-1 die made in the USA, and what is it made of?
Steel construction, made in the United States. That matters for two kinds of buyers: institutional and government procurement with domestic-sourcing requirements, and contractors who want a die that holds its cutting edge through repeated panel work rather than deforming after a few holes.
8) I need to punch 1 inch holes in a fiberglass enclosure. Will a steel knockout die crack it?
The KD-1 is rated for fiberglass and plastics as well as metals, so it is the right tool for non-metallic enclosure modification. Support the panel and draw the punch slowly and evenly; the die shears rather than drills, which is why it is cleaner on fiberglass than a hole saw.
How fast can I get the Greenlee KD-1 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 KD-1 come with a warranty?
Absolutely. The Greenlee KD-1 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 KD-1?
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 KD-1 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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