Precision Twist Drill 5999376 Jobber Drill Bit No 30

Product Description

The PRECISION TWIST DRILL 5999376 is a No. 30 wire gauge jobber length drill bit designed for general-purpose drilling in a wide range of metallic and hard materials. Manufactured from high speed steel with a steam oxide coating, it measures 2.75 inches in overall length with a 1.625-inch spiral flute. The 118-degree standard point angle and web-thinned, tapered web configuration promote clean entry and reduce thrust in production and maintenance drilling applications. This bit is sized at 0.1285 inches in diameter and is built to ANSI standards, making it a reliable choice for licensed tradespeople and shop technicians who need consistent performance from a wire gauge drill.

This jobber length bit is suited for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The straight-cylindrical shank fits standard drill chucks without adapters, making it practical for hand drills, drill presses, and CNC drilling setups in both shop and field environments. The right-hand spiral flute design handles chip evacuation in through-hole and blind-hole drilling at typical production depths up to 1.625 inches. It is a standard fitment for general metalworking, HVAC fabrication, plumbing rough-in, and electrical panel work where a No. 30 wire gauge hole is required.

Key Features

• No. 30 wire gauge size at 0.1285 inches diameter for precise wire-gauge hole sizing
• High speed steel construction with steam oxide coating for wear resistance and lubricity
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and clean starts
• Right-hand, regular spiral flute with 2 flutes for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks
• Meets ANSI and NAS 907 specifications for dimensional accuracy

Compatibility

Designed as a general-purpose OEM-style jobber length drill bit for use in standard drill chucks accepting a 0.1285-inch straight shank. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium as noted in the manufacturer specifications.

Installation Notes

Installation is performed by machinists, tool-and-die technicians, HVAC fabricators, plumbers, and electricians using standard drill chucks or drill press collets. Ensure the chuck is fully tightened and the workpiece is securely clamped before drilling. Use appropriate cutting fluid or coolant when drilling steel or stainless steel to extend bit life; note that this bit does not support internal coolant delivery. Replace the bit if the cutting edges show visible wear or the point geometry is damaged to avoid oversized holes or workpiece damage.