Cobalt Jobbers Length Twist Drill
NACHI Cobalt Jobbers Length Twist Drill - Cutting Direction: Right Hand   Size : 1/2   Tool Material: Cobalt steel   Shank Style: Straight shank   Drill Type: Jobbers Length

Cobalt Jobbers Length Twist Drill

Item #: 01-021-332
Brand: NACHI
Size Type: Fractional
Size: 1/2"
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 1/2" Cobalt RH 135° Pt Jobbers Drill
Product Specifications
Size Type Fractional
Size 1/2"
Drill Point Angle 135°
Tool Material Cobalt
Finish Coating Black Oxide
Cutting Direction Right Hand
Decimal Size .5000"
Drill Grade Heavy Duty
Drill Type Jobbers Length
Flute Shape Helical
Manufacturing Method Ground From the Solid
No. of Flutes 2
Overall Length 6"
Point Sharpening Type Split Point
Series 6501
Shank Style Straight Shank
Size_Combination 1/2
Type Cobalt Jobbers Length Twist Drill
Weight 0.5 lbs.
Country of Origin JAPAN

Other Items to Consider

TTC PRODUCTION Single Flute High Speed Steel Countersinks - Included Angle: 82°     Overall Length : 2-1/4   Shank Diameter : 1/2   SIZE : 5/8   No of Flutes: 1