• 135-degree split-point angles for centering and to reduce pressure on cutting edges
  • High-speed steel (HSS) containing cobalt is a good combination of toughness and hardness, for use on drilling through hard substances
  • Black oxide finish, for improving lubricity, resisting corrosion, and resistances to chipping or flaking
  • Jobber-length, for a wide range of applications
  • NAS 907 type D standards, for use in the aerospace industry
The Cleveland 3780 short flute jobber length, high-speed steel (HSS) containing cobalt drill bit has a 40-degree helix angle, with a 135-degree split-point and black oxide surface treatment, which is designed for heavy-duty drilling applications. Several features such as extra heavy web for increased rigidity, high helix angle for efficient chip removal, and a preferred drill bit point geometry for drilling into work-hardened stainless steels, combined with short flutes, offer a high performance drill bit for common aircraft maintenance duties or industrial usage. Conforms to NAS 907 type D specifications. Round shanks into a wide range of tool-holders.
Drill Bit

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