Description
The Irwin Unibit Step Drill Bits, High Speed Steel Fractional Self-Starting is a step drill bit. Cutting diameter (max) 1-1/8 in, 1/2 in; cutting edge material HSS; measurement type Fractional. Irwin lists Hex shank prevents slipping in drill chuck; Also available with (TiN) coating for longer life. Available in 2 versions.
Specifications
| Item | Irwin data |
|---|---|
| Cutting Diameter (max) | 1-1/8 in; 1/2 in |
| Cutting Edge Material | HSS |
| Measurement Type | Fractional |
| No. of Steps | 1 |
| Shank Diameter | 1/2 in; 1/4 in |
| Width | 2 in; 3.05 in |
| Height | 4 in; .25 in |
Source: Irwin published product data.
Irwin Unibit high speed steel step drills use a single-flute cutting edge and a SpeedPoint tip to drill thin stainless steel, copper, brass, aluminum, plastic, and laminates without walking. A hex shank prevents chuck slipping, with cutting diameters up to 1/2 in or 1-1/8 in.
- Single-flute cutting edge for greater control through steps
- Hex shank prevents slipping in drill chuck
- Also available with (TiN) coating for longer life
- New SpeedPoint tip penetrates faster than previous Unibits and prevents walking
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
Available in 2 versions. Choose one from the list to see the exact item number and price.
Item Numbers
Variant item numbers:
10313ZR – 1 1/8 in
10310 – 1/2 in
