Greenlee 50383280 Carbide-Tipp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$151.60
$101.60
Greenlee 50383280 Carbide-Tipped Hole Cutters

Greenlee 50383280 Carbide-Tipped Hole Cutter, 1-1/8" for 3/4" Conduit

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Model: 50383280
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$151.60
$101.60
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Greenlee 50383280 Carbide-Tipped Hole Cutter, 1-1/8" for 3/4" Conduit

The Greenlee 50383280 Carbide-Tipped Hole Cutter is built for electricians and installers who need fast, burr-free holes in metal enclosures and boxes. This hole cutter produces a 1-1/8" (28.6 mm) hole sized for 3/4" conduit applications, and features tungsten carbide teeth on the cutting edge for extended tool life when cutting through tough materials. With a maximum cutting depth of 8 GA, this cutter is designed for reliable performance on standard electrical enclosures, panels, and boxes used across commercial and industrial job sites. A built-in slug ejector spring allows for quick, easy slug removal after each cut, keeping the workflow moving without having to manually clear debris from the cutter body. The 3/8 IN chuck size and 1/2" shank ensure secure, stable engagement with standard drill chucks, while the 1/4" x 1-7/8" (6 mm x 48 mm) pilot drill centers the cutter for accurate placement — a replacement pilot drill (625-001) is sold separately for continued use over the life of the tool.

Key Features

  • Hole Size: Cuts a 1-1/8" (28.6 mm) hole sized for 3/4" conduit applications.
  • Cutting Edge: Tungsten carbide teeth deliver long-lasting sharpness and durability through repeated use.
  • Cutting Depth: Maximum cutting depth of 8 GA for standard box and panel gauges.
  • Slug Ejector Spring: Enables quick, easy slug removal and cuts round, burr-free holes.
  • Chuck Size: 3/8 IN chuck size for compatibility with standard drill chucks.
  • Shank Size: 1/2" shank for secure, stable drive engagement.
  • Pilot Drill: 1/4" x 1-7/8" (6 mm x 48 mm) pilot drill; replacement pilot drill 625-001 sold separately.
  • Compact Dimensions: Measures 7.15 IN in length, 3.8 IN in width, and 1.55 IN in height for easy handling.

Technical Specifications

  • Chuck Size: 3/8 IN
  • Country Of Origin: CN
  • Cutting Edge: Tungsten Carbide Teeth
  • Cutting Size: 8 GA Depth
  • Hole Size: 1-1/8" (28.6 mm) for 3/4" conduit
  • Maximum Cutting Depth: 8 ga
  • Packaged Weight: 0.325
  • Pilot Drill: Replacement 625-001 sold separately
  • Pilot Drill Size: 1/4" x 1-7/8" (6 mm x 48 mm)
  • Product Height: 1.55 IN
  • Product Length: 7.15 IN
  • Product Material: Carbide Tip
  • Product Size: 1-1/8 IN
  • Product Width: 3.8 IN
  • Shank Size: 1/2"
  • Volume: 1.91425 CI

Typical Applications

  • Cutting Conduit Entry Holes in Electrical Boxes and Panels
  • Commercial and Industrial Electrical Installations
  • Enclosure and Cabinet Fabrication
  • Panelboard and Load Center Modification
  • Renovation and New Construction Electrical Work

Why Greenlee?

Greenlee builds hole cutters with tungsten carbide cutting teeth for durability on demanding job sites, and the integrated slug ejector spring simplifies cleanup by ejecting slugs quickly for round, burr-free holes. With a defined 8 GA maximum cutting depth, 3/8 IN chuck size, and 1/2" shank, the 50383280 is engineered for consistent, repeatable performance when installers need a precise 1-1/8" hole for 3/4" conduit.

Manufacturer Resources

Product Specs

Chuck Size:
3/8 IN
Cutting Edge:
Tungsten Carbide Teeth
Cutting Size:
8 GA Depth
Hole Size:
1-1/8" (28.6 mm) for 3/4" conduit
Maximum Cutting Depth:
8 ga
Packaged Weight:
0.325
Pilot Drill:
Replacement 625-001 sold separately
Pilot Drill Size:
1/4" x 1-7/8" (6 mm x 48 mm)
Product Height:
1.55 IN
Product Length:
7.15 IN
Product Material:
Carbide Tip
Product Size:
1-1/8 IN
Product Type:
Carbide Hole Cutter
Product Width:
3.8 IN
Shank Size:
1/2"
Volume:
1.91425 CI
Department:
Electrical
Product Subgroup:
Hole Saws & Bits
Product Group:
Power Tools & Accessories

Greenlee 50383280 – Frequently Asked Questions

1) How thick a panel can this Greenlee carbide hole cutter go through?
Maximum cutting depth is 8 gauge material. That covers enclosure walls, panelboard tubs, pull boxes, and strut channel. It is not intended for plate heavier than 8 ga.
2) Will this cut stainless steel enclosures, or only mild steel?
The tungsten carbide teeth are rated for stainless steel along with mild steel, aluminum, copper, brass, fiberglass and plastics. That is the reason to reach for a carbide-tipped cutter over a standard bi-metal hole saw when you are punching a stainless washdown enclosure.
3) What pilot drill does the Greenlee 50383280 use, and is a spare included?
The pilot is a 1/4 inch by 1-7/8 inch bit (6 mm x 48 mm). Replacements are Greenlee 625-001 and are sold separately, so if you are cutting a lot of stainless, order spare pilots with the cutter. Pilots are the part that goes first on this kind of tool.
4) Can I run this hole cutter in a 3/8 inch drill?
The arbor carries a 1/2 inch shank, and the stated chuck size is 3/8 inch. A 3/8 inch keyed or keyless chuck that accepts a 1/2 inch shank will take it; a smaller chuck capacity will not. Check what your drill closes on before you order.
5) Should I use a carbide hole cutter or a knockout punch for enclosure work?
A punch set is the faster call for clean, repeated holes in thin sheet when you can get behind the panel to set the draw stud. This carbide cutter works from one side only with a drill, handles up to 8 ga, and cuts stainless as well as mild steel, aluminum, copper, brass, fiberglass and plastics, so it is the tool when there is no access behind the wall or the material is too tough for a punch.
6) How do I get the slug out after cutting a knockout?
A slug ejector spring is built in, so the cut disc pops free instead of having to be pried out of the cup. The hole comes out round and burr-free, which matters when you are dropping a connector straight in behind it.
7) Is 50383280 the part number to order for this Greenlee cutter?
Yes, 50383280 is the Greenlee manufacturer part number, and it ships as a single cutter in the 1-1/8 inch size with pilot. Country of origin is China.
8) What are the overall dimensions and weight of this Greenlee hole cutter assembly?
Packaged, it measures 7.15 inches long, 3.8 inches wide and 1.55 inches high, at 0.325 packaged weight. The cutting head itself is the 1-1/8 inch size.
How fast can I get the Greenlee 50383280 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 50383280 come with a warranty?
Absolutely. The Greenlee 50383280 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 50383280?
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 50383280 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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