Cleveland - Aircraft Extension Drill Bits Drill Bit Size (Letter): E Drill Bit Size (Inch): 1/4
Item #: 16413072
Brand: Cleveland
Model #: C08187
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.
Product Specifications
Aircraft Extension Drill Bits; Drill Bit Size (Letter): E ; Drill Bit Size (Inch): 1/4 ; Drill Bit Size (Decimal): 0.2500 ; Drill Point Angle (Degrees): 135 ; Drill Bit Material: Cobalt ; Drill Bit Finish/Coating: Oxide
| Drill Bit Size (Letter) | E |
| Drill Bit Size (Inch) | 1/4 |
| Drill Bit Size (Decimal) | 0.2500 |
| Drill Point Angle (Degrees) | 135 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | Oxide |
| Overall Length (Inch) | 12 |
| Flute Length (Decimal Inch) | 12.0000 |
| Specification Designation | NAS |
| Shank Diameter (Decimal Inch) | 0.2500 |
| Spiral Type | Regular Spiral |
| Flute Type | Spiral |
| Number of Flutes | 2 |
| Cutting Direction | Right Hand |
| Point Type | Split |
| Maximum Drilling Depth (mm) | 6.35 |
| Maximum Drilling Depth (Decimal Inch) | 0.2500 |
| Shank Length (Decimal Inch) | 3.2500 |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0000 to -0.0007 |
| Specification Number | NAS 907 Type J |
| PSC Code | 5133 |
| Material Grade | M42 |
| Series/List | 3722 |
| Through Coolant | No |
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