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

Cobalt Jobbers Length Twist Drill

Item #: 01-305-119
Size: S
Size Type: Letter
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
  • Black oxide finish except for 7/64" and smaller bright finish.

Technical Data

  • Manufactured from cobalt steel.
  • Cylindrically ground.
  • Ground from the solid.
Precision Dormer 015319 "S" 135? Cobalt Jobbers Length Drill
Product Specifications
Size S
Size Type Letter
Drill Point Angle 135°
Tool Material Cobalt
Finish Coating Bronze Oxide
Cutting Direction Right Hand
Decimal Size .3480"
Diameter .3480"
Drill Grade Heavy Duty
Drill Type Jobbers Length
Flute Shape Helical
Manufacturing Method Ground From the Solid
Length Style Jobbers Length
No. of Flutes 2
Overall Length 4-7/8"
Point Sharpening Type Split Point
Series R15C0
Prop. 65 Yes
Shank Style Straight Shank
Type Cobalt Jobbers Length Twist Drill
Weight 0.06 lbs.
Country of Origin Import
Prop 65 Warning Many metalworking products do contain metals that are included in the latest Prop 65 warning. Exposure to the elements can be harmful. May cause cancer and reproductive harm.

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