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Greenlee 34403 Multi-Hole Step Bit, 7/8"

4.7 out of 5 stars 31 customer reviews

List Price: $68.24
Price: $22.31 & FREE Shipping on orders over $49. Details
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In stock on July 29, 2016.
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Hole Sizes From 1/8-Inch through 1-3/8-I...
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  • Unique split tip design penetrates through steel faster
  • Resists walking or skidding
  • Balanced, double-flute construction requires less pressure
  • Hole Sizes: From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm)
  • Capacity: cut up through 3/8-Inch (9.5-mm) mild steel, copper, brass, aluminum, wood, plastic and laminates
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$22.31 & FREE Shipping on orders over $49. Details In stock on July 29, 2016. Order it now. Sold by Isg supply and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Greenlee 34403 Multi-Hole Step Bit, 7/8"
  • +
  • Forney 20857 Tap Magic Industrial Pro Cutting Fluid, 4 oz
Total price: $34.45
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Size: Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm)
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This item: Greenlee 34403 Multi-Hole Step Bit, 7/8"
Customer Rating 4 out of 5 stars (31) 4 out of 5 stars (13) 5 out of 5 stars (114) 5 out of 5 stars (13)
Price $22.31 $57.99 $36.80 $23.89
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Isg supply Gott Electronics Amazon.com Banyan Imports
Item Package Weight 0.35 pounds 0.45 pounds 0.15 pounds 1.1 pounds
Material metal High-Speed Steel Cobalt Titanium
Measurement System Inch Inch Inch Inch
Add to Cart Add to Cart Add to Cart Add to Cart

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Product Description

Size: Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm)

Product Description

Unique split tip design penetrates through steel faster. Resists walking or skidding, even on round surfaces. Balanced, double-flute construction requires less pressure, does the work for you. Multi-hole step bit.

From the Manufacturer

Greenlee has been going strong for more than 145 years and continues to be the preferred brand of tools and equipment for the electrical contractor. From hole making and bending to test and measurement, you can depend on Greenlee tools to outlast and outperform the competition every time. The Greenlee 34403 has a unique split-tip design that penetrates through steel faster. It is resistant against walking or skidding, even on round surfaces. It has a balanced, double-flute construction that requires less pressure and basically does the work for you. It's also designed and manufactured in the USA.

Product Information

Size:Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm)

Technical Details

Part Number 50344030
Item Weight 4.5 pounds
Product Dimensions 3.5 x 6.8 x 1.3 inches
Item model number 34403
Size Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm)
Color Green
Material metal
Item Package Quantity 1
Measurement System Inch
Batteries Included? No
Batteries Required? No
Warranty Description Limited service warranty

Additional Information

ASIN B000N5NF7M
Customer Reviews
4.7 out of 5 stars 31 customer reviews

4.7 out of 5 stars
Best Sellers Rank #151,269 in Home Improvements (See top 100)
#69 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Power Drill Parts & Accessories > Drill Bits > Step Drill Bits
Shipping Weight 5.6 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available November 9, 2004

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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From the Manufacturer


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By A. Pierpoint on January 23, 2013
Size: Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm) Verified Purchase
If you know stainless, it's a bit of a pain to drill a hole in, it quickly gets work hardened if it overheats. I decided to spend the money on this Greenlee step bit to drill my holes in a few stainless kegs for my port's and valves.

I made a pilot hole first, and the key is to use moderate pressure at a slow drill speed with plenty of lubricating oil on the drill bits to keep them cool.

Take it slow and don't let it get too hot or you will kill your drill bits and harden the stainless steel.

The Step bit made easy work of the holes I needed to make, and left very little burred edges to clean up. Don't make the mistake of buying cheap bits hoping to save a few bucks, you are likely to ruin your keg if you are not used to working with stainless.

A quality product for the purpose I used it for.
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Size: Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm) Verified Purchase
dont bother with cheap junk ones, this step bit is fantastic,
have tried many other brands in australia, even one i paid $90 for locally, it went blunt in 3 holes, this bit went on to do over 100 and still going stron.
only problem is i have to wait a bit for them to arrive in australia!
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Size: Hole sizes from 1/8" through 1-3/8" Verified Purchase
You can't buy any uni-bit better than a GreenLee. The reason I say this is because this is the ONLY bit that's fluted on both sides. Most other unibits have a single flute to extract the metal shavings. The greenlee has two, so that means less resistance on your cuts and faster drilling because the metal can escape the dill bit faster.

I've been using greenlee uni-bits for 10 years and only replace them every two-three years, and i use them daily on steel and aluminum drilling for electrical work.
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Size: Hole sizes from 1/8" through 1-3/8" Verified Purchase
I bought a pair of Greenlee step drill bits several years ago, and bought two more this time because the bit worked so well. We built a variety of frames and structural supports using stainless steel, Uni-strut, rebar, aluminum, and cast iron. Once the pilot hole is drilled, this step drill cuts thru them almost like butter. The first 1/2" step drill probably lasted over several thousand cutting before the edge became dull. Because the cutting edge is so sharp and hard, it takes a little getting used to when the drill is new. If you push too hard, the hole can get bigger than you intended to be. It's best to use it on a drill press with preset depth if possible. This drill bit his highly recommended.
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Size: Hole Sizes From 1/8-Inch through 1-3/8-Inch (3.2 - 34.9-mm) Verified Purchase
These are the best for drilling thin sheet metal. Twist drills will grab and pull in as you break through. The straight flutes on this step drill won't do that, so it's safer and you have more control. Run it at a reasonable speed and use some lube and it'll last a long time, too. Very tough.
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Size: Hole sizes from 7/8" through 1-3/8" Verified Purchase
I was given a damaged 5 gallon keg by a friend and intended to turn it into a heat exchanger, but to do that I needed to put a few holes in it. In the past when I needed to drill into metal I have worked around having to buy a step bit. Boy am I glad I did, it makes clean and precise whole very easily.

No more work-arounds for me.
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Size: Hole sizes Through 1/2" Verified Purchase
If you have sheet metal rather than proper wood studs, you likely know how much of a pain they are when it comes to mounting heavy objects. Toggle bolts (I prefer SnapToggles) are great for plain drywall, but sometimes you either encounter or actually want to put a toggle through a steel stud. For these scenarios, this is the bit you want.

First, be aware of the length of this bit; it's just enough for 5/8" drywall, but not much thicker. It's also meant strictly for boring a 1/2" hole. It does the latter exceptionally well. With light to moderate pressure and low RPMs, this goes through sheet metal studs with about 15-20 seconds of drilling. I've drilled dozens of holes through sheet metal and many more through plain drywall and this bit is still going strong.

An extra 1/16" length would be appreciated, but if your drill has a robust chuck and you're not drilling into sheet metal studs behind more than 5/8" drywall, this will serve you well.
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Size: Hole sizes from 7/8" through 1-3/8" Verified Purchase
I bought this along with the Greenlee 730BB-13/16 Standard Round Knockout Punch Unit, 13/16-Inch to create some holes in my brewing kettles. Along with some cutting oil, this product works really well. It's a little pricey, but I know this think will last, just make sure to use oil.
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