Chicago-latrobe 44110 No 40 Jobber Drill Bit Hss

Product Description

The CHICAGO-LATROBE 44110 is a jobber-length twist drill bit in wire gauge size No. 40, with a decimal diameter of 0.0980 inches. Made from high speed steel with an oxide coating, it is designed for general-purpose drilling in cast iron and steel. The 118-degree standard point angle and web-thinned, tapered web geometry help the bit center quickly and reduce feed pressure. At 2.375 inches overall length with a 1.375-inch flute length, this bit fits standard drill chucks and is sized for use in benchtop drill presses, hand drills, and CNC equipment in light production or maintenance settings. Machinists, maintenance technicians, and tool-and-die professionals are the primary users.

This bit suits general-purpose metal drilling applications in fabrication shops, production lines, and field maintenance environments. It is appropriate for through-holes and pilot holes in mild steel, cast iron, and similar ferrous materials where a standard-duty HSS bit meets the application requirements. The straight-cylindrical shank fits conventional three-jaw chucks without modification. The Series 150 designation places it within Chicago-Latrobe's standard jobber-length line, which is a common choice for shops carrying a full wire-gauge set.

Key Features

• Wire gauge size No. 40, decimal equivalent 0.0980 inches, with a diameter tolerance of -0.0005 to 0.0000 inches
• High speed steel construction with oxide finish for basic lubricity and corrosion resistance during storage
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and improved centering
• 2-flute spiral (regular helix) design for efficient chip evacuation in ferrous materials
• Straight-cylindrical shank, 0.0980 inches in diameter, 1.0 inch in shank length, fits standard drill chucks
• Meets DIN 338 standard for jobber-length drill geometry

Compatibility

Designed as a general-purpose jobber-length drill bit for use in cast iron and steel. Compatible with any standard drill chuck that accepts a straight-cylindrical shank at 0.0980 inches diameter.

Installation Notes

This bit is installed and used by machinists, maintenance technicians, and fabricators working with standard drill presses, hand drills, or CNC equipment. Secure the shank fully in the chuck before operation and verify chuck key removal before powering the spindle. Use appropriate cutting fluid or coolant when drilling steel to extend bit life, noting that this bit does not support internal coolant delivery. Inspect the cutting edges for wear or chipping before each use, as undersized or damaged bits can affect hole tolerance.