Precision Twist Drill 5998625 17/64 in Hss Drill Bit

Product Description

The PRECISION TWIST DRILL 5998625 is a screw machine length drill bit designed for high-performance drilling in metal fabrication and machining applications. Built from high speed steel (HSS) with a bright, uncoated finish, it measures 17/64 inch (0.2656 inches) in diameter and carries a standard 118-degree point angle. The shorter screw machine length body provides added rigidity compared to jobber-length bits, reducing deflection in drill press and CNC lathe work. Web thinning improves penetration at the tip, and the tapered web configuration supports chip evacuation through the spiral flute. Overall length is 2-5/8 inches with a 1-7/16 inch flute length.

This drill bit is suited for use in drill presses, screw machines, CNC lathes, and turret lathes where a compact, stub-length bit is required. The Series R40 designation indicates a general purpose, high-performance HSS grade appropriate for a range of metalworking tasks. Per supplier attribute data, the primary workpiece material rating is titanium, making it applicable to demanding non-ferrous and ferrous metal drilling. It fits straight-cylindrical shank tool holders common across most machine tool setups.

Key Features

• 17/64 inch (0.2656 inches) diameter, screw machine length for added rigidity
• 118-degree standard point angle with web thinning for improved entry and reduced thrust
• High speed steel construction, bright/uncoated finish
• Spiral flute, tapered web configuration for efficient chip removal
• Right-hand cut, straight-cylindrical shank fits standard machine tool holders
• Flute-to-diameter ratio of 2.5xD; meets ANSI standards

Compatibility

Designed for use in screw machines, drill presses, CNC lathes, and turret lathes accepting straight-cylindrical shank drill bits in the 0.2500 to 0.3000 inch diameter range. Series R40 general purpose grade per ANSI specification.

Installation Notes

Installation is performed by machinists or tool and die professionals in a machine shop environment. Secure the shank fully in the chuck or collet before operation and verify runout before drilling. Always power down and lock out the machine before changing tooling. Follow applicable ANSI machining safety practices and use appropriate cutting fluid or coolant for the workpiece material being drilled.