PRECISION TWIST DRILL 018370 #70 135° Cobalt Jobbers Drill
PRECISION TWIST Cobalt Jobbers Length Twist Drill - Cutting Direction: Right Hand   Size : #70   Tool Material: Cobalt steel   Shank Style: Straight Shank   Drill Type: Jobbers Length

PRECISION TWIST DRILL 018370 #70 135° Cobalt Jobbers Drill

Item #: 01-304-170
Size Type: Number
Size: #70
Drill Point Angle: 135°

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Only sold in increments of 12.

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


  • For most general purpose, heavy duty, drilling operations for tougher materials.
  • While cobalt drills generally offer a variety of benefits for drilling all materials, they are especially 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 tough ferrous alloys.
  • Split point design is self-centering and reduces the thrust requirements.
  • May be used with hand held manual drills and either portable or stationary machines.
  • Suitable lubricating/cutting oils or appropriate coolant fluids are recommended for most drilling operations to achieve optimal performance & extended tool life.


  • Right hand (clockwise rotation) cutting direction.
  • Standard two flute design.
  • Standard spiral, helical flutes.
  • Straight shanks that corresponds to the drill diameter.
  • Jobbers length corresponds to the drill diameter. The jobbers length used for each of these drills is variable and determined by the specific drill diameter, offering the best balance between overall drill rigidity and depth capacity for each drill diameter.

Technical Data

  • Manufactured from cobalt steel.
  • Cylindrically ground from the solid.
  • Heavy duty, general purpose drills.
  • 135° point angle and a heavier web.
PRECISION TWIST DRILL 018370 #70 135° Cobalt Jobbers Length Drill (Pack of 12)
Product Specifications
Size Type Number
Size #70
Drill Point Angle 135°
Tool Material Cobalt
Finish Coating Bronze
Cutting Direction Right Hand
Decimal Size .0280"
Drill Grade General Purpose and Heavy Duty
Drill Type Jobbers Length
First Choice For: Stainless Steel
Flute Shape Helical
Manufacturing Method Ground From the Solid
Model # 018370
No. of Flutes 2
Overall Length 1-1/4"
Point Sharpening Type Split Point
Prop. 65 Yes
Series R18CO
Shank Style Straight Shank
Type Cobalt Jobbers Length Twist Drill
UNSPSC 23241634
Weight 0.0001 lbs.
Workpiece Material Range Steel, Stainless Steel, High-Temp Exotic Alloys, Non-Ferrous, Cast Iron, Plastics
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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