Precision Twist Drill 5997686 Drill Bit Wire 44 Hss

Product Description

The PRECISION TWIST DRILL 5997686 is a jobber-length drill bit in wire gauge size 44, equivalent to 0.0860 inches in diameter. Built from high speed steel with a steam oxide coating, it features a 135-degree split-point tip for reduced walking and faster penetration on hard materials. The 2-flute spiral design with a tapered web and web-thinned point supports efficient chip evacuation during through-hole drilling. At 2.125 inches overall length with a 1.125-inch flute length, this bit is sized for precision drilling in tight-clearance applications. It meets ANSI standards and carries NAS 907 specification designation, making it suitable for controlled production environments.

This drill bit is engineered for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. It fits standard jobber-length applications in machine shops, maintenance facilities, and field service work where wire-gauge precision holes are required. The straight-cylindrical shank seats in standard chucks on drill presses, hand drills, and CNC spindles. General-purpose heavy-duty grade classification makes it a practical choice for repeated use across mixed-material drilling tasks.

Key Features

• Wire size 44 diameter — 0.0860 inches — for precision small-diameter drilling
• 135-degree split point reduces bit walking and decreases entry force on hard materials
• Steam oxide coating provides mild lubricity and corrosion resistance during use
• Web-thinned tapered web improves chip clearance and reduces thrust load
• Meets ANSI standards and NAS 907 specification for controlled manufacturing applications
• Right-hand cut with regular spiral flute — compatible with standard drill chucks and CNC tooling

Compatibility

Designed as a general-purpose jobber-length drill bit for use in any standard drill chuck or CNC spindle accepting a 0.0860-inch straight-cylindrical shank. Suitable for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium across Series R10B, R15B, and R18B applications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with proper chuck-seating procedures. Secure the straight-cylindrical shank fully into the chuck before operation and verify concentricity to avoid premature wear or breakage on small-diameter bits. Apply appropriate cutting fluid when drilling stainless steel, superalloys, or titanium to manage heat and extend tool life. Inspect the cutting edges before each use — small-diameter bits are susceptible to chipping and should not be used if the point shows visible damage.