Precision Twist Drill 5998370 No. 32 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5998370 is a jobber-length twist drill bit sized to No. 32 wire gauge (0.1160 inches decimal equivalent), designed for general-purpose drilling in a wide range of metallic and hard materials. Built from high speed steel with a steam oxide coating, it offers a 118-degree standard point angle and a web-thinned, tapered web construction for improved penetration and reduced thrust. The straight-cylindrical shank seats securely in standard drill chucks. With an overall length of 2.75 inches and a spiral flute length of 1.625 inches, this bit is suited for precise, repetitive through-hole and blind-hole drilling operations performed by machinists, maintenance technicians, and fabricators.

This drill bit is engineered for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It is a general-purpose tool used in job-shop machining, maintenance and repair operations, and light production environments. The regular spiral flute type provides efficient chip evacuation in a broad range of base materials. It conforms to ANSI standards and falls within the R10-R15-R18 series. Coolant-through capability is not included, making it best suited for hand-feed or light machine drilling applications where flood or mist coolant delivery is not required.

Key Features

• No. 32 wire size with 0.1160-inch decimal diameter for precision hole sizing
• High speed steel construction with steam oxide coating for corrosion resistance and reduced friction
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Regular spiral, 2-flute design provides effective chip clearance across multiple material types
• Straight-cylindrical shank fits standard drill chucks without adapters
• ANSI-conforming construction; Series R10-R15-R18 general-purpose grade

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck or drilling machine accepting a 0.1160-inch straight-cylindrical shank. Suitable for use in handheld drills, drill presses, and CNC machining centers operating on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces.

Installation Notes

Installation and use should be performed by machinists or qualified technicians familiar with proper speeds and feeds for high speed steel tooling in the target workpiece material. Secure the shank fully in the drill chuck before operating and verify chuck runout is within acceptable tolerance to prevent premature bit wear. Appropriate personal protective equipment including eye protection is required during all drilling operations. Do not exceed the recommended maximum drilling depth of 1.625 inches for this bit length.