Precision Twist Drill 5998208 Jobber Drill Bit No 13

Product Description

The PRECISION TWIST DRILL 5998208 is a jobber-length drill bit designed for general-purpose drilling in ferrous and non-ferrous materials. Ground from high-speed steel with a bright uncoated finish, it cuts right-hand with a standard 118-degree point angle and a regular spiral flute geometry. The No. 13 wire gauge size corresponds to a decimal diameter of 0.185 inches. Overall length is 3.5 inches, with a 2-5/16-inch flute length and a straight cylindrical shank. Licensed HVAC technicians, plumbers, electricians, and general tradespeople reach for this bit when drilling pilot or clearance holes in steel, cast iron, and non-ferrous stock.

This bit is suited for drilling into steel, cast iron, non-ferrous metals, and superalloys including titanium. It fits standard drill chucks and magnetic drill presses used in light fabrication, field installation, and service work. The 13xD flute-to-diameter ratio supports chip evacuation over the full 2-5/16-inch maximum drilling depth. The two-flute, web-thinned construction reduces entry force and helps maintain centerline accuracy in hand-drill and drill-press applications common to trade work.

Key Features

• No. 13 wire gauge size, 0.185 inches diameter, for precise clearance and pilot hole applications
• 118-degree standard point angle for general-purpose use on steel, cast iron, and non-ferrous metals
• High-speed steel construction provides heat resistance during prolonged drilling cycles
• Web-thinned, tapered-web design reduces thrust and improves centering on entry
• Bright uncoated finish — no coating buildup to affect hole tolerance in softer materials
• Right-hand cut, regular spiral, 2-flute configuration suits standard drill chucks and press setups

Compatibility

Designed for use in standard drill chucks accepting a 0.185-inch straight cylindrical shank. Suitable for drilling steel, cast iron, non-ferrous metals, and superalloys and titanium per Series R10H-R18H specification. Conforms to ANSI standards.

Installation Notes

Electricians, HVAC technicians, and plumbers installing this bit should secure the workpiece before drilling to prevent rotation and injury. Power down any equipment being drilled into before starting. Use appropriate cutting fluid when drilling steel or cast iron to extend bit life and maintain hole quality. Do not exceed the drill press or hand drill manufacturer rated chuck capacity when mounting this bit.