Precision Twist Drill 5999123 Jobber Drill Bit Size 57

Product Description

The PRECISION TWIST DRILL 5999123 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. It carries a wire gauge size of 57, equivalent to 0.0430 inches in decimal form. The bit is manufactured from high-speed steel (HSS) with a steam oxide coating that reduces friction and provides light corrosion resistance during use. It features a 118-degree standard point angle, a two-flute spiral configuration, and a web-thinned, tapered web design that aids chip evacuation and reduces thrust. Overall length is 1.75 inches. Licensed HVAC technicians, machinists, plumbers, and general trade contractors reach for this size when precision small-diameter hole placement is required.

This bit is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. The straight-cylindrical shank seats in standard drill chucks without modification. With a flute length of 0.75 inches and a maximum drilling depth of 0.75 inches, it is optimized for thin-stock and sheet applications where a compact jobber length provides better control and minimizes deflection. It belongs to the Series R10-R15-R18 family and conforms to ANSI standards.

Key Features

• Wire gauge size 57 (0.0430 inches decimal) for precise small-diameter hole placement
• High-speed steel construction handles steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Steam oxide coating reduces friction and provides light corrosion resistance
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Two-flute regular spiral design promotes efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to ANSI specification standards for consistent dimensional accuracy

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck that accepts a 0.0430-inch straight-cylindrical shank. Suitable for benchtop drill presses, hand drills, and CNC drilling setups within the capacity range of the tool.

Installation Notes

Installation of this bit is performed by machinists, tool-and-die technicians, or trade professionals using a drill press or hand drill. Secure the shank fully in the chuck and verify concentricity before operation. Always wear appropriate eye protection and secure the workpiece to prevent movement during drilling. Follow applicable shop safety standards and manufacturer feed-rate recommendations for HSS tooling in the material being drilled.