Chicago-latrobe 44278 No 8 Hss Jobber Drill Bit 0.1990 in

Product Description

The CHICAGO-LATROBE 44278 is a jobber-length drill bit in wire gauge size No. 8, with a decimal diameter of 0.1990 inches, manufactured from high speed steel with a bright uncoated finish. It features a standard 118-degree split point with web thinning for easier starting and reduced walking on entry. The 2-flute spiral design with a regular helix and tapered web configuration provides efficient chip evacuation in general-purpose drilling applications. With an overall length of 3.625 inches and a straight-cylindrical shank, this bit is sized for use in standard drill chucks. It is suited for machinists, maintenance technicians, and trade professionals who require reliable, repeatable hole sizing in non-ferrous and general-purpose materials.

The 44278 is designed for general-purpose drilling in non-ferrous metals and similar materials. The 3.625-inch overall length and 2.4375-inch flute length make it practical for bench drill presses, hand drills, and drill-press setups in shop and field environments. The straight-cylindrical shank seats securely in standard three-jaw and keyless chucks. It conforms to DIN 338 standards, making it a recognized specification for jobber-length tooling across a wide range of trade and industrial drilling tasks.

Key Features

• Wire size No. 8 with 0.1990-inch decimal diameter and tight diameter tolerance of -0.0007 to 0.0000 inches
• 118-degree standard point angle with web thinning for clean entry and reduced thrust
• High speed steel construction for durability across general-purpose materials
• Bright uncoated finish suitable for non-ferrous metals and general shop use
• Regular spiral, 2-flute design with tapered web for efficient chip clearing
• Conforms to DIN 338 jobber-length standard

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks accepting a 0.1990-inch straight-cylindrical shank. Suitable for drilling non-ferrous metals and general-purpose workpiece materials in a wide range of drill press and handheld drill applications.

Installation Notes

Install and service by machinists or qualified trade personnel familiar with rotary cutting tools. Secure the shank fully in the chuck and verify zero runout before drilling. Power down and de-energize the drill press or tool before changing bits. Do not exceed the rated speed range for the workpiece material, and use appropriate eye protection and chip guards per applicable shop safety standards.