Precision Twist Drill 5999416 Wire 40 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5999416 is a jobber-length drill bit sized to wire gauge 40 (0.0980 inches decimal), ground from high speed steel with a steam oxide coating for corrosion resistance and reduced friction during operation. It carries a 118-degree standard point angle and a web-thinned, tapered web design that reduces entry force and improves chip clearance. Overall length is 2.375 inches with a 1.375-inch spiral flute length. The straight cylindrical shank seats directly into standard drill chucks without adapters. This bit is designed for right-hand cutting with a regular spiral and is suitable for production or maintenance drilling by machinists, millwrights, and general trade technicians.

The 5999416 is built for general-purpose drilling across a broad range of workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It conforms to ANSI standards and meets NAS 907 specification requirements, making it appropriate for aerospace-adjacent and industrial maintenance applications where dimensional consistency and material traceability matter. The small diameter and jobber length make it well suited to close-tolerance work, fixture drilling, and pilot hole operations in confined areas.

Key Features

• Wire gauge 40 sizing at 0.0980 inches decimal for close-tolerance drilling applications
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• Steam oxide coating provides corrosion resistance and mild lubricity compared to bare HSS
• Right-hand cut, regular spiral, two-flute design for efficient chip evacuation
• NAS 907 specification compliance and ANSI conformance for traceability in industrial settings
• Straight cylindrical shank fits standard drill chucks without additional tooling

Compatibility

Designed as a general-purpose jobber-length replacement or production drill bit for use in any standard drill chuck accepting a 0.0980-inch straight cylindrical shank. Suitable for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium per Series R10A, R15A, and R18A classifications.

Installation Notes

Installation is performed by machinists, maintenance technicians, or qualified trade professionals using a drill press, CNC machine, or hand drill with a compatible chuck. Secure the shank fully in the chuck and verify concentricity before use on close-tolerance work. Use appropriate cutting fluid or lubricant when drilling stainless steel, superalloys, or titanium to extend tool life and prevent work hardening. Never exceed the recommended maximum drilling depth of 1.375 inches for this bit diameter and flute length.