Guhring - 7.75mm 130° Spiral Flute Cobalt Screw Machine Drill Bit
Item #: 54131123
Brand: Guhring
Model #: 9003290077500
Features and Benefits
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Oxide prevents chip building, galling and welding on the workpiece. It is commonly used 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) | 0.3051 |
| Drill Bit Size (mm) | 7.75 |
| Drill Point Angle | 130 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | Oxide |
| Flute Type | Spiral |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Flute Length (mm) | 37.00 |
| Overall Length (mm) | 79.00 |
| Flute Length x Diameter Ratio | 3xD |
| Point Type | Cone Relief |
| Shank Diameter (mm) | 7.75 |
| Shank Diameter (Decimal Inch) | 0.3051 |
| Specification Designation | DIN |
| Spiral Type | Regular Spiral |
| Threaded Shank | No |
| Number of Flutes | 2 |
| Drill Bit Diameter Tolerance (mm) | h8 |
| Web Thinning | Web-Thinning |
| Drill Bit Grade | Heavy Duty |
| Material Grade | M35 |
| Series/List | 329 |
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