Unibor
Unibor 19X7/16E3 Weldon Shank Step Drill 7/16in 9/16in 3 DIAS
Weldon shank step drill creates three hole sizes from 7/16 to 9/16 inch
- Weldon shank ensures secure fit in magnetic drills
- Three diameter steps cover 7/16in to 9/16in range
- Unibor brand built for professional metalworking
- Step design drills multiple hole sizes with one tool
- Manufacturer ships direct on orders over 75
Unibor Weldon Shank Step Drill
The Unibor 19X7/16E3 is a Weldon shank step drill designed for drilling multiple hole diameters in a single pass. It suits metalworkers and maintenance technicians who need to enlarge existing holes or create stepped holes in sheet metal and plate. The tool covers three diameters ranging from 7/16in to 9/16in.
Weldon Shank Installation Notes
The Weldon shank locks into a compatible magnetic drill or drill press chuck using a set-screw flat, so ensure your machine accepts this mounting style. A common issue is using the tool in a standard three-jaw chuck without the flat engaged, which causes slippage and damages the shank. Use cutting fluid and steady pressure to prevent the steps from binding.
Pre-Purchase Compatibility Check
Verify that your magnetic drill or drill press has a Weldon shank receiver before ordering. Confirm the material thickness you intend to drill does not exceed the tool's effective step length. Buyers who need a straight shank for a hand drill or a larger diameter range should look for a different tool configuration.
Highlights
- Weldon shank ensures secure fit in magnetic drills
- Three diameter steps cover 7/16in to 9/16in range
- Unibor brand built for professional metalworking
- Step design drills multiple hole sizes with one tool
- Manufacturer ships direct on orders over 75
Specifications
| Brand | UNIBOR |
|---|
Questions about this item
How can I verify the 19X7/16E3 step drill is cutting cleanly through the 7/16in, 1/2in and 9/16in diameters after I mount it?
Check that each of the three steps produces a smooth, round hole without chatter or excessive force, and that the Weldon shank remains firmly seated in the magnetic drill chuck during the cut.
What comes with the 19X7/16E3 and what must I source separately to use it?
The package contains the step drill itself with its integrated Weldon shank; you will need a compatible magnetic-base drill and cutting fluid, which are not included.
When should I choose the 19X7/16E3 over other Unibor step drills?
Select this model when you need exactly the three hole sizes — 7/16in, 1/2in and 9/16in — in a single Weldon-shank tool for magnetic drilling.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
