Precision Twist Drill 5998713 Jobber Drill Bit 7/16 in

Product Description

The PRECISION TWIST DRILL 5998713 is a jobber-length twist drill bit designed for general-purpose drilling in a wide range of metalworking applications. Manufactured from high-speed steel with a steam oxide coating, the bit measures 7/16 inches (0.4375 inches) in diameter with a 118-degree standard point angle and a right-hand spiral flute configuration. The overall length is 5.5 inches, with a flute length of 4.0625 inches, making it well-suited for moderate-depth drilling without extended reach tooling. The straight-cylindrical shank seats securely in standard drill chucks. This is a general-purpose tool typically installed and used by machinists, maintenance technicians, and trade professionals working with metal fabrication or repair tasks.

This drill bit is rated for use on steel, stainless steel, cast iron, non-ferrous metal, superalloys, titanium, and other hard materials. It is a Series R10 jobber-length bit built to ANSI standards and is appropriate for use in drill presses, hand drills, and CNC drilling setups where a straight-cylindrical shank is compatible. The 9xD flute-to-diameter ratio supports chip evacuation during drilling at standard depths up to 4.0625 inches.

Key Features

• 7/16 inches (0.4375 inches) diameter high-speed steel construction for durability in metalworking
• Steam oxide coating reduces friction and provides basic corrosion resistance
• 118-degree standard point angle with web-thinned, tapered web for easier starting
• Right-hand cut with regular spiral flute geometry for efficient chip removal
• Straight-cylindrical shank fits standard drill chucks without adapters
• Rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium

Compatibility

Designed for use in standard drill presses, hand drills, and CNC drilling equipment that accept a 7/16-inch straight-cylindrical shank. Suitable across primary workpiece material codes P, M, K, N, and S per ANSI classification. Conforms to ANSI specification designation for jobber-length drill bits.

Installation Notes

Secure the shank fully in the drill chuck before operation and verify chuck key is removed prior to starting the spindle. Use appropriate cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to extend tool life and maintain cut quality. Note that this bit does not support through-coolant delivery. Follow applicable shop safety standards and machine guard requirements during use.