Precision Twist Drill 5998476 Jobber Drill Bit 17/64 in

Product Description

The PRECISION TWIST DRILL 5998476 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. Built from high-speed steel (HSS) with a bright, uncoated finish, this bit features a 118-degree standard point angle and a right-hand, regular spiral flute configuration. The straight-cylindrical shank measures 17/64 inch (0.2656 inch) in diameter, matching the bit diameter for direct chuck mounting. With a 2-flute design and web-thinned, tapered web, it delivers efficient chip evacuation and reduced thrust during drilling operations. Licensed tradespeople and shop technicians alike rely on this Series R10H-R18H bit for consistent, accurate hole production.

This drill bit is suited for drilling into steel, cast iron, non-ferrous metals, superalloys, and titanium. Its jobber-length overall dimension of 4.125 inches provides a practical balance of reach and rigidity across typical production and maintenance drilling tasks. The 2-7/8 inch flute length allows a maximum drilling depth of 2.875 inches per pass without repositioning. It carries no coolant-through capability, making it appropriate for standard dry or flood-cooled setups on conventional drill presses, lathes, and handheld power tools.

Key Features

• High-speed steel construction for durability across ferrous and non-ferrous workpiece materials
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Right-hand cut, regular spiral flute with 11xD flute-to-diameter ratio for effective chip removal
• Straight-cylindrical shank compatible with standard three-jaw drill chucks
• Bright, uncoated finish suitable for general-purpose use without specialized coating requirements
• Conforms to ANSI standards for consistent dimensional accuracy

Compatibility

Designed as an OEM-style general-purpose jobber drill bit compatible with any standard drill chuck accepting a straight-cylindrical shank in the 17/64 inch diameter range, including conventional drill presses, CNC drilling centers, lathes, and handheld power drills.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drill press and cutting tool safety practices. Secure the shank fully in the chuck and verify runout before beginning a cut. Disengage power and bring the spindle to a complete stop before changing bits or clearing chips. Do not exceed the recommended drilling depth of 2.875 inches per pass without retracting the bit to clear chips.