Precision Twist Drill 5998669 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998669 is a screw machine length drill bit designed for high-performance metal drilling applications. Built from high speed steel with a coated finish, this bit features a 135-degree split point and web-thinned tip for fast penetration and reduced walking on hard materials. The straight-cylindrical shank seats securely in standard drill chucks and quick-change toolholders. At 2.375 inches overall length with a 1.25-inch flute, the stubby profile reduces deflection in tight-clearance drilling setups. The 0.204-inch diameter matches wire gauge size 6. Intended for use by machinists, maintenance technicians, and trade professionals working with titanium, stainless, and other demanding materials.

This drill bit is rated for primary workpiece material of titanium, making it suitable for aerospace, HVAC equipment fabrication, plumbing fixture work, and general metalworking where hard-alloy penetration is required. The screw machine length format is preferred for drill press, CNC turret, and hand-held power drill use where a shorter, stiffer bit body minimizes runout. The R41C series is built to ANSI and NAS 907 specifications for dimensional and performance consistency.

Key Features

• 0.204-inch (wire gauge 6) diameter for precise, consistent hole sizing
• 135-degree split point with web thinning reduces thrust and prevents tip walking
• High speed steel construction with coated finish for extended tool life in hard materials
• Screw machine length body at 2.375 inches overall for reduced deflection in confined spaces
• Right-hand spiral flute geometry promotes efficient chip evacuation
• Meets ANSI and NAS 907 specifications for dimensional accuracy

Compatibility

Designed as a screw machine length replacement or production drill bit for use in standard straight-shank drill chucks and toolholders accepting 0.204-inch diameter bits; rated for titanium and similarly hard primary workpiece materials per R41C series specification.

Installation Notes

This bit is installed by machinists and maintenance technicians using drill presses, CNC turret machines, or hand-held power drills with a compatible straight-shank chuck. Ensure the chuck jaws are fully tightened and the shank is fully seated before operation. Use appropriate cutting fluid for titanium and high-alloy workpieces to manage heat buildup and extend tool life. Inspect the cutting edges for wear or chipping before each use and replace the bit if tip geometry is compromised.