Chicago-Latrobe 69855 Style 559 Drill Set in Metal Index Case

Chicago-Latrobe, 69855, Style 559 Letter A - Z Drill Set in Metal Index Case

Features

• Heavy-duty geometry for drilling tougher materials by hand or machine.
• Shorter flute and overall length provide superior rigidity to minimize deflection when using heavy feed rates.
• Manufactured from premium cobalt high-speed steel.
• 135° P3 split point is self-centering for reduced thrust and easier penetration. Sizes under .0625" do not have split points.
• Straw and titanium nitride (TiN) finishes standard from stock; titanium aluminum nitride (TiAlN) is a nonstocked standard; alternate coatings available as stock modifications.
• Straw finish allows for easy identification of cobalt tools.
• Titanium nitride (TiN) PVD coating adds lubricity and hardness which enhances chip flow, finish hole quality, and drill life.
• Titanium aluminum nitride (TiAlN) PVD coating combines the ability to work in high temperatures with added hardness to increase drill life.

Application Information:

• tool steel (TiAlN, TiN, straw)
• alloy steel (TiAlN, straw)
• carbon steel (TiAlN, TiN, straw)
• cast iron (TiAlN, TiN, straw)