Overview
Mfr description
78143112 78143112 NO. 4 COBALT JOBBER DR
- 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 ferrous metals
- Regular, also known as medium spiral bits, are used in general purpose applications
- They are used on soft, nonferrous materials
- Spiral flutes are constructed with a higher flute angle to remove chips more easily.
Specifications
- MaterialCobalt
- Finish CoatingOxide
- Coolant DeliveryNo
- Shank TypeStraight
- Flute Length2-1/2 in
- Flute TypeSpiral
- Point TypeSplit Point
- Overall Length3-3/4 in
- Drill Bit Size0.2090 in
- Cutting DirectionRight Hand
- Spiral TypeRegular Spiral
- Shank Diameter0.2090 in
- Drill Point135
- SpecificationNAS 907-J
- Web ConfigurationTapered
- Web ThinningX-Thinned
Compliance & Safety Data
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