Precision Twist Drill 5999047 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999047 is a screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. Built from high speed steel with a coated finish, this bit measures 0.377 inches in diameter with a 135-degree split point and a web-thinned, tapered web configuration that reduces walking and cutting resistance at entry. The straight-cylindrical shank seats securely in standard drill chucks. At 3.25 inches overall length with a 1.875-inch flute length and a 2.5xD flute-to-diameter ratio, the screw machine format keeps the bit rigid and suited for close-clearance work. It is rated Heavy Duty and meets ANSI and NAS 907 specifications.

This drill bit is built for cutting titanium as its primary workpiece material, making it appropriate for aerospace, precision machining, and metal fabrication environments where titanium alloys are regularly encountered. The right-hand cut spiral flute handles chip evacuation efficiently in these tough materials. Machinists, tool and die technicians, and maintenance mechanics working with titanium or similarly hard metals will find this bit sized at letter V for direct replacement in existing setups running that designation.

Key Features

• 0.377-inch diameter, letter V sizing for direct drop-in use
• 135-degree split point with web thinning reduces thrust force and prevents walking on hard metals
• High speed steel construction with coated finish for extended tool life
• Screw machine length format provides added rigidity in tight setups
• Right-hand cut spiral flute for efficient chip evacuation
• Meets ANSI and NAS 907 standards for dimensional and performance compliance

Compatibility

Designed as an OEM-style replacement and direct-fit screw machine length drill bit for applications requiring a letter V diameter bit in Series R42C, sized for use in standard straight-shank drill chucks and compatible with setups working in the 0.3500 to 0.4000 inch diameter range.

Installation Notes

Machinists and tool technicians should ensure the drill press, lathe, or handheld drill is powered down and fully stopped before changing bits. Seat the straight-cylindrical shank fully into the chuck and tighten securely before use. When drilling titanium or other hard metals, use appropriate cutting fluid and avoid excessive feed rates that can generate heat buildup and reduce tool life. Dispose of worn bits in accordance with applicable shop safety protocols.