Cleveland C71042 21/32 Inch Jobber Drill Bit Hss

Product Description

The CLEVELAND C71042 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and composite materials. The bit measures 21/32 inches (0.6562 inches) in diameter with an overall length of 7.125 inches and a flute length of 5.188 inches. It is manufactured from high speed steel with an oxide finish that provides a degree of corrosion resistance and reduces friction during cutting. The 118-degree standard point angle and web-thinned tip reduce thrust requirements and improve centering at the start of a cut. Licensed machinists, tool-and-die trades, HVAC fabricators, and pipefitters commonly use bits of this type for structural and sheet-metal work.

The C71042 is suited for general-purpose production and maintenance drilling operations in shop or field environments. The right-hand spiral flute with a regular helix efficiently clears chips from the cut. The straight cylindrical shank with a diameter of 0.6563 inches seats securely in standard three-jaw drill chucks and compatible chuck adapters. Its 4xD flute-to-diameter ratio and tapered web configuration make it a reliable choice for drilling through mild steel, aluminum, copper, and similar materials at moderate feed and speed rates.

Key Features

• 21/32 inch (0.6562 inch) diameter with a diameter tolerance of -0.0012 to 0.0000 inches for consistent hole sizing
• High speed steel construction with oxide coating for reduced friction and basic corrosion resistance
• 118-degree standard point angle with web-thinned tip to reduce entry thrust and improve bit centering
• Right-hand, 2-flute regular spiral design for efficient chip evacuation
• Straight cylindrical shank at 0.6563 inches diameter fits standard drill chucks
• Meets ASME B94.11M and DIN 338 standards for jobber-length drill bits

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck or drill press capable of accepting a 0.6563-inch straight cylindrical shank. Conforms to ASME B94.11M and DIN 338 specifications.

Installation Notes

Secure the shank fully into a properly rated drill chuck before operation and verify chuck jaws are tightened evenly. Power down and de-energize or lock out the drill press or power tool before changing bits. Use appropriate cutting fluid for ferrous materials to extend bit life and maintain dimensional accuracy. Wear appropriate PPE including eye protection during all drilling operations.