Cleveland C71131 Jobber Drill Bit Wire 31 Hss Oxide

Product Description

The CLEVELAND C71131 is a jobber length drill bit in wire size 31, with a decimal diameter of 0.1200 inches, manufactured from high speed steel with a black oxide coating. It features a 118-degree standard point angle, a two-flute regular spiral design, and a web-thinned, tapered web configuration for improved chip clearing and reduced thrust on entry. Overall length is 2.75 inches with a 1.625-inch flute length. The straight-cylindrical shank has a diameter of 0.1200 inches and a shank length of 1.125 inches. This bit is a right-hand cut, general purpose tool suited for licensed trades and maintenance professionals working with ferrous and non-ferrous materials in production or service applications.

The C71131 is designed for general purpose drilling in residential and commercial maintenance, fabrication, and service environments. The jobber length format offers a practical flute-to-diameter ratio of 4xD, making it appropriate for through-hole drilling in sheet metal, structural steel, pipe, conduit supports, and similar trade materials. The oxide finish provides mild corrosion resistance and reduces friction during cutting. It is sold individually but carries a minimum order quantity of 12 units, making it well suited to shop stocking and field kit replenishment.

Key Features

• Wire size 31 with 0.1200-inch decimal diameter, held to a tolerance of -0.0005 to 0.0000 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction for durability across a wide range of base materials
• Black oxide coating for mild lubricity and corrosion resistance
• Two-flute regular spiral design promotes efficient chip evacuation
• Meets ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general purpose jobber length drill bit compatible with standard 3-jaw drill chucks and keyed chuck systems accepting a 0.1200-inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists, electricians, plumbers, and HVAC technicians using standard drill presses, hand drills, or right-angle drills with appropriate chuck capacity. Secure the shank fully in the chuck before operation and confirm the workpiece is clamped or fixtured. Use appropriate cutting fluid when drilling hard ferrous materials to extend bit life. Inspect the cutting edges for wear before each use and replace when the point shows signs of dulling or chipping.