Precision Twist Drill 5998112 Jobber Drill Bit 73 Hss

Product Description

The PRECISION TWIST DRILL 5998112 is a wire gauge size 73 jobber length drill bit machined from high speed steel (HSS) with a bright uncoated finish. It features a standard 118-degree split point, a regular spiral flute, and a straight-cylindrical shank with a 0.0240-inch diameter. The two-flute right-hand cutting geometry produces clean, consistent holes in a range of metallic workpiece materials. At 1.125 inches overall length with a 5/16-inch flute length, this bit is sized for precision drilling in tight or small-bore applications. It is part of the R10H-R18H series and conforms to ANSI standards.

This drill bit is suited for drilling operations in steel, cast iron, non-ferrous metals, superalloys, and titanium. It fits standard drill chucks and is appropriate for use on drill presses, CNC machining centers, hand drills, and other rotating equipment where a straight-cylindrical shank is accepted. The general-purpose grade and bright finish make it a practical choice for machinists, toolroom technicians, and maintenance trades working with small-diameter wire gauge holes.

Key Features

• Wire gauge size 73 with 0.0240-inch decimal diameter for precise small-bore drilling
• High speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard drill point angle for general-purpose entry performance
• Right-hand, regular spiral flute design with web-thinned, tapered web configuration
• Bright uncoated finish — no coating degradation risk during regrinding
• ANSI-conforming geometry; part of the R10H-R18H series

Compatibility

Designed as a general-purpose jobber length drill bit compatible with primary workpiece materials including steel, cast iron, non-ferrous metals, superalloys, and titanium. Accepts standard drill chucks sized for a 0.0240-inch straight-cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or trained technician. Secure the shank fully in the chuck and verify concentricity before beginning any drilling operation. Power down and de-energize all equipment before changing bits. Do not exceed the recommended maximum drilling depth of 5/16 inch without retracting to clear chips.