Precision Twist Drill 5998313 Jobber Drill Bit 41/64 in

Product Description

The PRECISION TWIST DRILL 5998313 is a jobber-length drill bit designed for general-purpose drilling in metal and hard materials. Sized at 41/64 inch (0.6406 inch decimal), it features a 118-degree standard point angle and a two-flute spiral configuration with a right-hand cut. The bright, uncoated high speed steel construction handles a wide range of workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The straight-cylindrical shank seats securely in standard drill chucks, making it a straightforward tool for metalworking tradespeople and maintenance technicians.

This bit is suited for production and maintenance drilling in fabrication shops, mechanical rooms, and field service environments. The 5-3/16-inch flute length provides substantial cutting depth relative to diameter, and the tapered web with web-thinned point reduces thrust requirements when starting holes. It is intended for use in hand-held or bench-mounted drilling equipment where a jobber-length bit is the appropriate reach. The Series R10P designation places it within PRECISION TWIST DRILL's standard general-purpose HSS family.

Key Features

• 41/64 inch (0.6406 inch) diameter with matching straight-cylindrical shank for secure chuck engagement
• 118-degree standard point angle with web-thinned, tapered web for reduced starting thrust
• High speed steel construction, bright uncoated finish, suitable for a broad range of metals
• Right-hand cut, regular spiral, two-flute design for efficient chip evacuation
• 5-3/16-inch flute length supports a maximum drilling depth of 5.1875 inches
• Meets ANSI specification standards; Series R10P-R15P-R18P family

Compatibility

Designed for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Compatible with any standard drill chuck sized to accept a 41/64-inch straight-cylindrical shank.

Installation Notes

Install the bit fully and securely into the drill chuck before operation, confirming the shank is centered and the chuck is tightened. Power down and disconnect or lock out the drilling equipment before changing bits. Use appropriate cutting fluid or coolant for extended drilling in hard or heat-sensitive materials, noting that this bit does not support coolant-through delivery. Observe safe speeds and feeds appropriate for the workpiece material and bit diameter to prevent overheating and premature wear.