Chicago-Latrobe 49381 HD Screw Machine #11 135 Degree

Product Description

The CHICAGO-LATROBE 49381 is a heavy-duty screw machine drill designed for drilling tougher materials by hand or machine. Manufactured from premium high-speed steel, it features a 135-degree P3 split point for self-centering, reducing thrust and enabling easier penetration. Its shorter flute and overall length provide superior rigidity, minimizing deflection during heavy feed rates. This #11 diameter drill is suitable for alloy, carbon, and tool steels, as well as cast iron, with a right-hand cutting direction.

• Heavy-duty geometry for drilling tougher materials.
• 135-degree P3 split point for self-centering and reduced thrust.
• Constructed from high-speed steel with a steam oxide finish.

Product Highlights

Optimized for rigidity and precision drilling in demanding applications.

Product Information

Standard Information

• Brand: CHICAGO-LATROBE
• Manufacturer Part Number: 49381
• Country of Origin: US

Technical Specifications

• Category: Screw Machine Drills
• Classification: Twist Drill Bits
• Coating: Steam Oxide
• Cutting Depth: 3XD
• Decimal Diameter: 0.191 in
• Drill Construction: Heavy-Duty
• Drill Length Class: Screw Machine Length
• Drill Size System: Wire
• Drill Style: Screw Machine
• Flute Length: 1.1875 in
• Flute Type: Spiral
• Grade: Heavy Duty
• Hand of Cut: Right
• Hand of Spiral: Right
• Helix Angle: 28°
• Manufacturer: Greenfield Industries Inc
• Material: HSS
• Max Drilling Depth: 1 3/16"
• Number of Flutes: 2
• Number of Pieces: 1
• Overall Length: 2.2500"
• Point Angle: 135 degree
• Point Length: 0.0396"
• Point Shape: Split
• Primary Material Application: Cast Iron, Steel
• Primary Material Application Iso Code: K, P
• Product Family: Chicago-Latrobe 135° Heavy-Duty Screw Machine Drills
• Series: 159
• Shank Length: 1.0625 in
• Shank Size: 0.191 in
• Shank Type: Straight
• Standards: Not Rated
• Wire Diameter: #11