Kennametal - 21mm 180° Spiral Flute Solid Carbide Screw Machine Drill Bit - Multilayer TiAlN Finish, Right Hand Cut, 86mm Flute Length, 141mm OAL, Flat-Bottom Point, Straight Shank, Through Coolant
Item #: 76294115
Brand: Kennametal
Model #: 3885872
Exact Tooling IR#: 04
Features and Benefits
Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high-speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Multilayer Titanium Aluminum Nitride (TiAlN) is a blended coating that is more efficient than TIN. It offers a high level of wear resistance at higher cutting speeds and used on high alloy steels and cast iron.
Spiral flutes are constructed of a higher flute angle to remove chips easier.
| Product Specifications | |
|---|---|
| Drill Bit Size (Decimal Inch) | 0.8268 |
| Drill Bit Size (mm) | 21.00 |
| Drill Point Angle | 180 |
| Drill Bit Material | Solid Carbide |
| Drill Bit Finish/Coating | Multilayer TiAlN |
| Flute Type | Spiral |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Flute Length (mm) | 86.00 |
| Flute Length (Decimal Inch) | 3.3858 |
| Overall Length (mm) | 141.00 |
| Overall Length (Decimal Inch) | 5.5512 |
| Flute Length x Diameter Ratio | 3xD |
| Point Type | Flat-Bottom |
| Shank Diameter (mm) | 20.00 |
| Shank Diameter (Decimal Inch) | 0.7874 |
| Specification Designation | DIN |
| Maximum Drilling Depth (mm) | 60.00 |
| Maximum Drilling Depth (Decimal Inch) | 2.3622 |
| Spiral Type | Regular Spiral |
| Shank Length (mm) | 50.00 |
| Shank Length (Decimal Inch) | 1.9685 |
| Threaded Shank | No |
| Number of Flutes | 2 |
| Drill Point Length (mm) | 0.57 |
| Drill Point Length (Decimal Inch) | 0.0224 |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (mm) | 0.008 to 0.029 |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0003 to +0.0011 |
| Drill Tip Finish/Coating | None |
| Specification Number | DIN 6535 |
| Series/List | B707A-FBL |
| Length Type | Stub |
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