Precision Twist Drill - Letter E (1/4) 135° Spiral Flute Cobalt Screw Machine Drill Bit
Item #: 78549219
Brand: Precision Twist Drill
Model #: 042305
Features and Benefits
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Oxide/Gold provides a polished finish and prevents chip building, galling and welding on a workpiece. It is commonly used in several applications on low carbons, stainless steel and iron based ferrous metals.
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 | Oxide/Gold |
| Flute Type | Spiral |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Coolant Through | No |
| Flute Length (Inch) | 1-3/8 |
| Overall Length (Inch) | 2-1/2 |
| Point Type | Split Point |
| Specification Designation | ANSI |
| Spiral Type | Regular Spiral |
| Threaded Shank | No |
| Web Configuration | Tapered |
| Web Thinning | Web-Thinned |
| Material Grade | M42 |
| Series/List | M42CO |
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