Precision Twist Drill 5998843 Drill Bit Letter C Hss

Product Description

The PRECISION TWIST DRILL 5998843 is a jobber-length drill bit sized to Letter C, equal to 0.2420 inches in diameter. Made from high speed steel with a bright uncoated finish, it is designed for general-purpose drilling in a wide range of materials. The 118-degree standard point angle provides reliable entry and chip evacuation in production and maintenance environments. With a two-flute spiral configuration and web-thinned tip, the bit delivers consistent hole quality and reduces thrust when starting. Licensed electricians, plumbers, pipefitters, HVAC technicians, and general maintenance mechanics all rely on this type of bit for day-to-day drilling tasks on metal fabrications and mechanical assemblies.

This drill bit is suited for use in ferrous and non-ferrous metals including steel, stainless steel, cast iron, non-ferrous metal, superalloys, and titanium. The straight cylindrical shank fits standard three-jaw drill chucks on both benchtop drill presses and handheld power drills. The jobber length format makes it practical for general shop and field work where a compact, versatile bit is needed without specialty tooling.

Key Features

• Letter C size — 0.2420 inches diameter for precise hole sizing
• High speed steel construction for durability across hard and abrasive workpiece materials
• 118-degree standard point angle with web-thinned tip for reduced entry thrust
• Two-flute regular spiral geometry promotes efficient chip removal
• Straight cylindrical shank compatible with standard drill chucks
• Bright uncoated finish suitable for general-purpose and light production drilling

Compatibility

Designed as a general-purpose jobber-length drill bit from the R10P-R15P-R18P series, compatible with any standard straight-shank drill chuck accepting a 0.2420-inch shank diameter. Conforms to ANSI standards for jobber-length drill geometry.

Installation Notes

Install in a properly sized drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. Apply appropriate cutting fluid when drilling stainless steel, cast iron, or titanium to extend tool life and maintain hole quality. Always wear eye protection and follow applicable shop safety procedures when operating drilling equipment.