Cleveland C71108 Jobber Drill Bit Wire 8 0.1990 in Hss

Product Description

The CLEVELAND C71108 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastic. Manufactured from high speed steel (HSS) with an oxide coating for added lubricity and corrosion resistance, this bit carries a wire gauge size of number 8, which corresponds to a decimal diameter of 0.1990 inches. The 118-degree standard point angle suits a wide range of common materials and is the baseline geometry most machinists and fabricators reach for in everyday production and maintenance work. Overall length is 3.625 inches with a 2.4375-inch flute length, and the shank diameter matches the cutting diameter at 0.1990 inches for straight-cylindrical chuck retention.

This bit fits applications where a short, stiff jobber-length tool is preferred over extended-length alternatives. Typical uses include light structural steel, aluminum extrusions, sheet metal, and general fabrication work in industrial maintenance, HVAC equipment manufacturing, plumbing rough-in, and electrical panel fabrication. The regular spiral and tapered web with web thinning keep cutting forces low while maintaining point strength. The bit is suited for hand-held drills, drill presses, and CNC drilling operations running general-purpose feeds and speeds for HSS tooling.

Key Features

• Wire size number 8 cutting diameter of 0.1990 inches with a diameter tolerance of -0.0007 to 0.0000 inches
• 118-degree standard split point with web thinning reduces thrust and improves centering on flat stock
• High speed steel construction with oxide coating for lubricity and light corrosion resistance
• Regular spiral, two-flute design with a 4xD flute-to-diameter ratio for efficient chip evacuation
• Straight-cylindrical shank at 0.1990 inches diameter fits standard three-jaw drill chucks without a reducer
• Meets ASME B94.11M and DIN 338 standards for jobber-length twist drills

Compatibility

Designed as a general-purpose jobber-length drill bit suitable for use in standard three-jaw drill chucks accepting a 0.1990-inch straight shank, across hand-held, bench, and machine drilling applications.

Installation Notes

A licensed machinist, maintenance technician, or qualified fabricator should select cutting speed and feed rate based on workpiece material and machine capability for HSS tooling. Secure the shank fully in the chuck before operation and confirm the chuck key is removed before powering the machine. Use cutting fluid or coolant where the material and operation allow to extend tool life. Inspect the cutting edges for wear before each use and replace the bit if the point geometry is compromised.