Cle-line C74023 12mm Hss Jobber Drill Bit 135 Split Point

Product Description

The CLE-LINE C74023 is a high-speed steel jobber-length drill bit designed for production drilling in steel and cast iron. It measures 12.00 mm (0.4700 inch) in diameter with an overall length of 5.9400 inches and a flute length of 3.9800 inches. The 135-degree split point reduces walking and lowers thrust requirements at entry. A black oxide and gold coating improves lubricity and surface hardness. Built to ASME B94.11M and DIN 338 standards, this is a heavy-duty tool suited for experienced machinists, tool and die shops, and maintenance mechanics who need consistent performance in ferrous materials.

The C74023 is intended for drilling steel and cast iron in both job-shop and production environments. The regular spiral flute and right-hand cutting direction make it compatible with standard drill presses, CNC machining centers, and handheld drilling equipment. The straight cylindrical shank fits standard three-jaw drill chucks. With a maximum drilling depth of 1.1800 inches per pass and a 3xD flute-to-diameter ratio, it is well suited to through-hole and blind-hole applications in medium to heavy-duty fabrication work.

Key Features

• 135-degree split point for reduced walking and lower feed force at entry
• High-speed steel construction rated for drilling steel and cast iron
• Black oxide and gold coating for improved lubricity and surface wear resistance
• Regular spiral flute with tapered web for efficient chip evacuation
• Straight cylindrical shank compatible with standard drill chucks
• Meets ASME B94.11M and DIN 338 dimensional and performance standards

Compatibility

Designed as a direct-fit jobber drill for use in standard three-jaw chucks on drill presses, CNC machining centers, and handheld power drills accepting a 0.4700-inch straight shank.

Installation Notes

Installation and use should be performed by qualified machinists or experienced tradespeople familiar with rotating cutting tools. Secure the shank fully in the chuck and verify runout before drilling. Always wear appropriate PPE including eye protection when operating drill equipment. Follow machine manufacturer guidelines for feed rate and spindle speed when drilling ferrous materials.