Precision Twist Drill 5997503 1/2 in Jobber Drill Bit Hss

Product Description

The PRECISION TWIST DRILL 5997503 is a jobber-length drill bit engineered for general-purpose drilling in metal and hard materials. Manufactured from high speed steel with a steam oxide coating, it measures 0.5 inches in diameter and 6 inches in overall length, with a 4.5-inch flute length. The 118-degree standard point angle and web-thinned, tapered web design promote clean entry and reduced thrust. Two spiral flutes clear chips efficiently during right-hand cutting operations. This bit is a standard production tool used by machinists, pipefitters, electricians, and maintenance tradespeople working in shop and field environments.

The 5997503 is suited for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The straight-cylindrical shank with a 0.5-inch shank diameter fits standard three-jaw chucks on drill presses, hand drills, and magnetic base drills. The Series R10A-R15A-R18A designation places this bit within a family of general-purpose jobber-length tooling conforming to ANSI and NAS 907 standards. It is a practical everyday tool for maintenance, fabrication, and installation tasks across trades.

Key Features

• High speed steel construction with steam oxide coating for corrosion resistance and reduced friction
• 118-degree standard point angle for general-purpose use across a wide range of workpiece materials
• Web-thinned, tapered web reduces cutting thrust and improves penetration on harder materials
• Two spiral flutes with regular spiral type promote efficient chip evacuation
• Right-hand cut with straight-cylindrical shank fits standard chucks without adapters
• Meets ANSI and NAS 907 specifications for dimensional and performance consistency

Compatibility

Designed as an OEM-style jobber-length drill bit conforming to ANSI and NAS 907 standards, compatible with any standard three-jaw drill chuck accepting a 0.5-inch straight-cylindrical shank. Suitable for use with drill presses, hand drills, and magnetic base drills in shop or field applications.

Installation Notes

Install into a properly rated chuck and tighten securely before operating. Always wear eye protection and secure the workpiece before drilling. Match spindle speed to the workpiece material and bit diameter per standard machining reference charts. Do not exceed the maximum drilling depth of 4.5 inches in a single pass without retracting to clear chips.