Precision Twist Drill 5998682 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998682 is a screw machine length drill bit engineered for high-performance drilling in demanding trade and industrial applications. Manufactured from high-speed steel with a coated finish, this bit carries a wire gauge size of 22, corresponding to a decimal diameter of 0.1570 inches. The 135-degree split point with web thinning reduces walking at entry and lowers the thrust force required to start and maintain a cut. At 2.125 inches overall length with a 1.0625-inch flute length, it fits standard drill chucks and screw machine setups without modification. The straight-cylindrical shank ensures consistent grip in both keyed and keyless chucks.

This drill bit is designed for right-hand cutting in screw machine length configurations, making it well suited for short-reach drilling operations on CNC lathes, automatic screw machines, drill presses, and hand-held power drills used in production and maintenance environments. The Series R41C is rated as a heavy-duty grade with a 2.5xD flute-to-diameter ratio and a tapered web configuration. The primary designated workpiece material is titanium, though the high-speed steel construction and split-point geometry also support use on a range of metals encountered in machining and fabrication work. Compliant with ANSI and NAS 907 standards.

Key Features

• Wire size 22 (0.1570 inch decimal diameter) with matching straight-cylindrical shank diameter of 0.1570 inches
• 135-degree split point with web thinning reduces drill walk and entry thrust
• Tapered web configuration improves chip evacuation and cutting stability
• High-speed steel construction with coated finish for extended tool life
• Screw machine length (2.125 inches OAL) for short-reach rigidity in tight setups
• Meets ANSI and NAS 907 standards; heavy-duty drill bit grade

Compatibility

Designed as an OEM-style replacement and standard production drill bit for screw machine and short-length drilling applications requiring a 0.1570-inch diameter hole. Compatible with any drill press, CNC lathe, automatic screw machine, or portable drill accepting a straight-cylindrical shank of 0.1570 inches.

Installation Notes

Installation and use of this drill bit is performed by machinists, tool and die technicians, and maintenance mechanics. Secure the straight-cylindrical shank firmly in a keyed or keyless chuck before operation and verify runout is within acceptable limits for the application. Always power down and de-energize the machine before changing tooling. Follow applicable shop safety standards and wear appropriate eye protection when operating rotating cutting tools.