Cobalt construction: Delivers high red hardness for extended durability and wear resistance
135 degree split point: Provides self-centering for fast, accurate drilling and reduced thrust
Gold oxide finish: Enhances surface hardness and tool life
Rugged short design: Ideal for portable use and limited spindle clearance
Performs in iron and steel families: Versatile for automotive and construction applications
Summarized by Shop
Cobalt screw machine drills (also know as stub or stubby drills) are manufactured to Aerospace Standard 907. The 135 degree split point is self-centering and reduces thrust. Ideal for portable or machine drilling. Short, rugged construction performs well in a broad range of materials in the iron and steel families. Screw machine drills ar