Chicago-Latrobe
Chicago-Latrobe 50855 Screw Machine Drill Bit Z Size 135 Degrees Point Cobalt
A cobalt screw-machine drill bit in Z size with a 135-degree split point for right-hand cutting at 0.4130 decimal equivalent
- TypeDrill Bits
- Precise starts with 135-degree split point
- Drills tough alloys using cobalt construction
- Right-hand cutting suits standard chucks
- Decimal size .4130 matches Z designation
- Free shipping threshold at $75 orders
Product Identity
Chicago-Latrobe 50855 is a screw machine drill bit in Z size with a 135-degree split point made from cobalt steel. It is designed for professional machinists and maintenance technicians who need a right-hand cutting tool with a 0.4130 inch decimal equivalent for precise hole-making operations.
Compatibility Check
Verify that your drill press, lathe or portable drill accepts straight-shank bits and can run at speeds suitable for cobalt tooling. Ensure the workpiece material and setup match the non-coolant-through design and that the machine spindle rotates in a right-hand direction for proper engagement.
Ideal User Profile
This bit suits shops drilling medium to hard metals where cobalt heat resistance and split-point self-centering improve accuracy and tool life. It is not intended for buyers who need coolant-through capability, left-hand cutting direction or a different drill bit size for their specific application.
Highlights
- Precise starts with 135-degree split point
- Drills tough alloys using cobalt construction
- Right-hand cutting suits standard chucks
- Decimal size .4130 matches Z designation
- Free shipping threshold at $75 orders
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
Does the 50855 drill bit come in a set or is it sold individually?
The product is listed as a single Screw Machine Drill Bit, so one Z-size bit is supplied in the package.
When should I choose the Z size with 0.4130 decimal equivalent over another diameter?
Choose the Z size when your project calls for a 0.4130-inch hole; the 135-degree split point helps start accurately in metal without a centre punch.
How does the 135-degree split point perform in a handheld drill versus a drill press?
The 135-degree split point is self-centring, so it reduces wandering in both handheld and stationary drilling, while the cobalt construction resists heat during extended use.
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