Chicago-Latrobe
Chicago-Latrobe 50850 Screw Machine Drill Bit U Size 135 Degrees Point Cobalt
A cobalt screw-machine drill bit in size U with a 135-degree split point for right-hand cutting at 0.3680 decimal equivalent
- TypeDrill Bits
- Cobalt construction resists heat and wear
- 135-degree split point starts holes cleanly
- Right-hand cutting direction suits standard drills
- Decimal size .3680 matches U specification
- Non-coolant through design for dry use
Chicago-Latrobe 50850 Cobalt Drill Bit
This Chicago-Latrobe 50850 is a screw machine drill bit made from cobalt steel with a straw finish. It features a 135 degree split point that starts on contact and reduces walking. The right-hand cutting direction suits standard drill motors and drill presses. It is designed for metalworking tasks requiring high heat resistance.
Split point geometry limits walking on hard metal
The 135 degree split point centres the bit without a centre punch on flat surfaces. Cobalt construction maintains hardness at elevated temperatures generated during drilling. The straw oxide finish provides lubricity and corrosion resistance. Non-coolant-through design means chips must clear the flutes without internal delivery.
Decimal equivalent .3680 defines the exact hole size
This U size bit produces a hole diameter of .3680 inches, matching the specific clearance or tap drill requirement for the job. Selecting by decimal equivalent eliminates guesswork between fractional, letter and number size systems. The bit is intended for users who need this precise diameter in a screw machine length. It is not for buyers who need a different diameter or a jobber length flute.
Highlights
- Cobalt construction resists heat and wear
- 135-degree split point starts holes cleanly
- Right-hand cutting direction suits standard drills
- Decimal size .3680 matches U specification
- Non-coolant through design for dry use
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
Should I choose the U-size bit or a different letter size for my application?
The U-size bit has a decimal equivalent of .3680 inches, so select it when your project requires that exact hole diameter.
How does the 135-degree split point perform once the bit is in a drill press or hand drill?
The 135-degree split point is self-centering and reduces walking on hard materials, giving cleaner starts in metal.
What does the cobalt construction mean for cutting speed and tool life in steel?
Cobalt steel resists heat better than high-speed steel, allowing faster cutting and longer edge life in tough alloys.
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