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5/16 190-AG Jobber Drill Bit
5/16 Jobber Drill Bit 190-AG


Jobber Drill Bit - 5/16" 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.
  • UPC 050728057404

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.

$3.59 Each

Quantity in Stock:99042

Product Code: 5-16-190-AG


  • Diameter: 5/16"

  • Length: 4-1/2"

  • Flute Length: 3-3/16"

  • MPN: 05740

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

  0 of 0 people found the following review helpful:
5 of 5 Ggdth September 3, 2021
Reviewer: Tom Harrold from Okc, OK United States  
I'm NOT doing each individual drill bit. I've ordered from you for several years. I've been very pleased with the quality and service. On this order I placed, I used an account. NEVER did figure out how to log out. Pretty frustrating. Tell Les I said hi.

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