Chicago-Latrobe - Letter E (1/4) 135° Spiral Flute Cobalt Screw Machine Drill Bit
Item #: 03681814
Brand: Chicago-Latrobe
Model #: 51813
Features and Benefits
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools.
Spiral flutes are constructed of a higher flute angle to remove chips easier.
| Product Specifications | |
|---|---|
| Drill Bit Size (Decimal Inch) | 0.2500 |
| Drill Bit Size (Letter) | E |
| Drill Bit Size (Inch) | 1/4 |
| Drill Point Angle | 135 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | TiN |
| Flute Type | Spiral |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Coolant Through | No |
| Flute Length (mm) | 34.93 |
| Flute Length (Decimal Inch) | 1.3750 |
| Overall Length (mm) | 63.50 |
| Overall Length (Decimal Inch) | 2.5000 |
| Point Type | P3 Split Point |
| Shank Diameter (mm) | 6.35 |
| Shank Diameter (Decimal Inch) | 0.2500 |
| Specification Designation | DIN |
| Spiral Type | Regular Spiral |
| Shank Length (mm) | 28.57 |
| Shank Length (Decimal Inch) | 1.1248 |
| Threaded Shank | No |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0000 to -0.0007 |
| Drill Tip Finish/Coating | None |
| Specification Number | DIN 1897 |
| Web Thinning | Web-Thinned |
| Drill Bit Grade | Heavy Duty |
| Series/List | 559 |
| Length Type | Regular |
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