Precision Twist Drill 5998634 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998634 is a screw machine length drill bit designed for high-performance drilling in a wide range of materials, including titanium. Measuring 0.1875 inches (3/16 inch) in diameter with an overall length of 2.1875 inches and a flute length of 1.125 inches, this bit features a 118-degree standard point angle and a web-thinned, tapered web configuration for reduced thrust and improved chip evacuation. Manufactured from high speed steel with a bright/uncoated finish, it is built for general purpose use where consistent, accurate hole placement is required. The Series R40 designation places it in a proven product line built to ANSI standards.

This drill bit is suited for production and maintenance environments where screw machine length tooling is preferred for its rigidity and reduced deflection in short-reach drilling applications. The right-hand spiral flute geometry handles materials from common steels to titanium, making it a practical choice for machine shops, fabrication facilities, and industrial maintenance operations. The straight-cylindrical shank seats in standard drill chucks on bench-top drill presses, CNC drill heads, or screw machines without modification.

Key Features

• 3/16 inch (0.1875 inch) diameter to ANSI specification, suitable for close-tolerance drilling
• 118-degree standard point angle with web thinning reduces entry thrust
• Tapered web configuration promotes controlled chip flow and flute clearance
• High speed steel construction rated for titanium and comparable hard materials
• Bright/uncoated finish allows visual wear inspection during service life
• Screw machine length (2.5xD flute-to-diameter ratio) provides added rigidity over jobber-length bits

Compatibility

Designed as a direct-fit replacement for standard straight-shank screw machine length drill bits in the 0.1500 to 0.2000 inch diameter range, conforming to ANSI standards for straight-cylindrical shank tooling.

Installation Notes

This bit is installed by machinists and tool-and-die professionals using standard drill chucks rated for straight-shank tooling. Ensure the chuck is fully tightened and the workpiece is securely fixtured before operation. Always power down and lock out the machine before changing tooling. Follow applicable shop safety standards and manufacturer feed-and-speed guidelines for the workpiece material being drilled.