Cobalt Jobbers Length Twist Drill
NACHI Cobalt Jobbers Length Twist Drill - Cutting Direction: Right Hand   Size : F   Tool Material: Cobalt steel   Shank Style: Straight shank   Drill Type: Jobbers Length

Cobalt Jobbers Length Twist Drill

Item #: 01-022-306
Brand: NACHI
Size Type: Letter
Size: F
Drill Point Angle: 135°

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Suited for tougher materials such as alloys, stainless & manganese steels, etc.


  • Well suited for heavy duty operations in high tensile strength, low machinability, ferrous metals and alloys.
  • The 135° split point works for drilling alloy steels, manganese steels, harder stainless steels and a variety of other tough ferrous alloys.
  • Works well with tough high tensile strength non-ferrous materials like titanium and inconel due to its heat resistance.
  • Split point design is self-centering and helps to reduce the thrust requirements.


  • Right hand (clockwise rotation) cutting direction.
  • Standard two flute design.
  • Standard spiral, helical flutes.

Technical Data

  • Manufactured from cobalt steel.
  • Cylindrically ground.
  • Ground from the solid.
Nachi Letter F Cobalt RH Jobbers Drill w/135° Point
Product Specifications
Size Type Letter
Size F
Drill Point Angle 135°
Tool Material Cobalt
Finish Coating Black Oxide
Cutting Direction Right Hand
Decimal Size .2570"
Drill Grade Heavy Duty
Drill Type Jobbers Length
Flute Shape Helical
For Thread Size 5/16"-18
Manufacturing Method Ground From the Solid
No. of Flutes 2
Overall Length 4-1/8"
Point Sharpening Type Split Point
Series 6501
Shank Style Straight Shank
Type Cobalt Jobbers Length Twist Drill
Weight 0.02 lbs.
Country of Origin JAPAN