Chicago-latrobe 44078 Jobber Length Drill Bit Size 8

Product Description

The CHICAGO-LATROBE 44078 is a jobber length drill bit designed for general-purpose metal drilling in professional trade and shop environments. It carries a wire gauge size of 8, equal to 0.1990 inches in decimal, and is manufactured from high speed steel with an oxide coating to reduce friction and extend tool life. The 118-degree standard point angle suits a wide range of ferrous materials. With a right-hand spiral flute and web-thinned tip, the bit evacuates chips efficiently and starts cleanly without a center punch on most setups. Machinists, pipefitters, and maintenance mechanics are the primary users.

This bit is suited for drilling cast iron and steel in both production and repair contexts. The straight-cylindrical shank fits standard three-jaw drill chucks on corded drills, drill presses, and milling machine quills. The overall length of 3.625 inches and flute length of 2.4375 inches place it in the standard jobber range, making it a practical choice for through-hole work in material up to approximately 2 inches thick without repositioning. The Series 150 designation identifies it within the CHICAGO-LATROBE general-purpose line produced to DIN 338 dimensional standards.

Key Features

• Wire gauge size 8, 0.1990 inches decimal diameter with a tolerance of -0.0007 to 0.0000 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner starts
• High speed steel construction with oxide finish for reduced friction in ferrous materials
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Straight-cylindrical shank at 0.1990 inches diameter fits standard drill chucks
• Manufactured to DIN 338 standards for consistent dimensional accuracy

Compatibility

Designed as a general-purpose jobber length drill bit for use in cast iron and steel applications. Fits any standard drill chuck accepting a 0.1990-inch straight-cylindrical shank, including hand drills, drill presses, and milling machines.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Secure the shank fully in the chuck and verify runout before drilling. Always wear appropriate eye protection and secure the workpiece before applying cutting pressure. Follow applicable shop safety standards and equipment manufacturer guidelines when operating drill presses or handheld power tools.