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Cobalt threaded shank drill bit with split point

Drill America

Drill America Cobalt Threaded Shank Drill Bit Type D NAS 965

SKU CH-7QGM-CD45D

Cobalt threaded-shank drill bit with 135° split point for hard, high-tensile materials

  • Cobalt alloy extends life in hard metals
  • M42 8% cobalt resists wear in tough materials
  • 135° split point starts cleanly without wandering
  • NAS 965 Type D spec ensures aerospace fit
  • Threaded shank locks securely in adapter chucks

Cobalt Threaded Shank Bit

This Drill America bit is a Type D adapter style drill made from M42 8% cobalt. It meets NAS 965 specifications for professional use. The 135° heavy duty split point and surface treatment target hard, high tensile strength materials. It suits maintenance and production shops needing long tool life.

Upgrade From High Speed Steel

The cobalt construction replaces Type B high speed steel adapter drills in the same NAS 965 series. The jump is worth it when drilling low tensile strength materials where tool life increases significantly. Cost per hole drops because the bit stays sharp longer. Shops running high volumes on softer metals see the fastest payback.

Capacity And Headroom

The bit comfortably handles tough alloys and hardened steels that dull standard steel drills quickly. It runs out when the application demands a different shank style or a diameter not offered in this Type D range. Users needing non-threaded shanks or specialised coatings must look elsewhere. The 8% cobalt blend balances hardness and toughness for general heavy duty work.

Highlights

  • Cobalt alloy extends life in hard metals
  • M42 8% cobalt resists wear in tough materials
  • 135° split point starts cleanly without wandering
  • NAS 965 Type D spec ensures aerospace fit
  • Threaded shank locks securely in adapter chucks

Specifications

BrandDRILL AMERICA

Questions about this item

What type of adapter does the threaded shank use?

The shank is a Type D adapter style manufactured to NAS 965 specifications.

How do I secure the split point when installing the bit?

Seat the 135 degree split point fully in the chuck and tighten firmly so the flutes do not walk on hard material.

When will the cobalt cutting edges need replacement?

Replace the bit once the M42 8% cobalt edges dull enough to increase drilling force or reduce hole quality in high tensile materials.

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