Chicago-latrobe 42718 Jobber Drill Bit Wire 48 Tialn Hss

Product Description

The CHICAGO-LATROBE 42718 is a TiAlN-coated high speed steel jobber length drill bit designed for high-performance drilling in tough materials. Built to NAS 907 Type B standards, it carries a wire gauge size of 48, which equals 0.0760 inches in decimal. The 135-degree split point reduces walking at startup and lowers the thrust required to enter hard workpieces. At 2 inches overall length with a 1-inch spiral flute, this is a compact, rigid bit suited for precision hole-making in tight applications. The web-thinned, tapered web design keeps cutting action efficient through the full depth of the flute.

This bit is rated for drilling titanium as its primary workpiece material, making it a go-to choice for aerospace, defense, and precision machining environments where hard-metal performance is required. The TiAlN coating extends tool life under high heat and friction conditions common when cutting titanium and similar alloys. It is appropriate for use in CNC machining centers, drill presses, and hand-held power tools where a straight-cylindrical shank is accepted. The right-hand cut, regular spiral flute configuration provides reliable chip evacuation in through-hole and blind-hole applications.

Key Features

• TiAlN coating resists heat and wear during high-speed cutting in titanium and hard alloys
• 135-degree split point reduces thrust requirements and minimizes drill walk on entry
• Web-thinned tapered web improves cutting efficiency at full flute depth
• NAS 907 Type B standard ensures aerospace-grade dimensional and performance compliance
• Straight-cylindrical shank fits standard drill chucks without adapters
• Heavy-duty grade HSS construction rated for high-performance production drilling

Compatibility

Designed as an OEM-style replacement or direct-use jobber length drill bit for applications requiring a wire size 48 (0.0760 inch) straight-shank bit in NAS 907 Type B compliant tooling programs.

Installation Notes

Installation of this bit is performed by machinists and tool-and-die trades using standard drill chucks rated for the straight-cylindrical shank diameter. Ensure the chuck and spindle are free of debris and the shank is fully seated before tightening. When drilling titanium or similar hard alloys, use appropriate cutting fluid and observe recommended spindle speeds to avoid premature coating wear. Do not exceed the rated operating parameters of the drilling equipment.