Precision Twist Drill 5999254 Drill Bit No 85 Hss

Product Description

The PRECISION TWIST DRILL 5999254 is a jobber-length drill bit in wire gauge size No. 85, with a decimal diameter of 0.0110 inches. Made from high speed steel with a bright uncoated finish, it is designed for general-purpose drilling in a wide range of materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The 118-degree standard point angle and web-thinned, tapered web construction promote accurate starting and consistent chip evacuation. With a 2-flute regular spiral design and a straight cylindrical shank, this bit is suited for use in standard drill chucks and small-diameter precision drilling applications. It is installed and used by machinists, tool and die technicians, and maintenance professionals working with close-tolerance work.

This drill bit is intended for use in drilling operations requiring very small diameter holes in metallic and hard materials. Its 3/4-inch overall length and 3/32-inch flute length make it well suited for shallow-depth, precision drilling tasks in production or maintenance environments. The R18P series designation places it within the PRECISION TWIST DRILL general-purpose jobber line conforming to ANSI standards. It is applicable across steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces.

Key Features

• Wire gauge size No. 85 with 0.0110-inch decimal diameter for small-diameter precision drilling
• High speed steel construction provides durability across steel, stainless steel, cast iron, and hard materials
• 118-degree standard point angle with web-thinned, tapered web for accurate starting and reduced thrust
• Right-hand cut, 2-flute regular spiral design for consistent chip removal
• Bright uncoated finish suitable for general-purpose drilling without coolant-through requirement
• Straight cylindrical shank compatible with standard drill chucks

Compatibility

Designed as a general-purpose jobber-length drill bit conforming to ANSI standards, suitable for use in standard drill chucks accepting a 0.0110-inch straight cylindrical shank across drilling applications in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium.

Installation Notes

This drill bit is typically installed and operated by machinists or maintenance technicians using a drill press, CNC machine, or hand drill with an appropriate chuck. Secure the shank firmly in the chuck before operation and verify spindle speed is appropriate for the workpiece material and drill diameter. Due to the small diameter of this bit, use low feed pressure to avoid deflection or breakage. No coolant-through capability; apply cutting fluid externally as needed based on workpiece material.