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1/4 190-AG Jobber Drill Bit
1/4 Jobber Drill Bit 190-AG


Jobber Drill Bit - 1/4" Heavy Duty

Norseman Magnum Super Premium - 135° Split Point Type 190-AG

  • Manufactured to NAS 907B specification from Premium Hi-molybdenum steel.
  • Substantially outperforms cobalt drill bits in stainless steel, hardened steel and other heavy-duty drilling applications.
  • Nitrocarburized for toughness, decreased wear, and corrosion resistance.
  • Withstands substantially higher drilling temperatures while maintaining sharpness.

Magnum drill bits use special Hi-Molybdenum tool steel and feature a 135° split point for fast penetration and accurate starting without a center punch. They withstand substantially higher drilling temperatures while maintaining sharpness. Body and clearance are gold surface treated for maximum lubricity. These rill bits are heat treated at 2185° F and then nitrocarburized at 950° to be measurably harder than high-speed steel.

$2.03 Each

Quantity in Stock:97586

Product Code: 1-4-190-AG

  • Diameter: 1/4"
  • Length: 4"
  • Flute Length: 2-3/4"

Average Rating: Average Rating: 3 of 5 3 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
3 of 5 October 25, 2021
Reviewer: Peter Kondrat from EATON CENTER, NH United States  

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