Cleveland C09744 Taper Length Drill Bit Letter E Hss

Product Description

The CLEVELAND C09744 is a taper length, high-speed steel drill bit sized at Letter E (0.25 inches, 0.2500 decimal inch). It features a standard 118-degree point angle with web thinning and a tapered web configuration, which reduces cutting resistance and helps center the bit during entry. The spiral flute design promotes efficient chip evacuation, and the right-hand cut orientation is standard for conventional drilling setups. At 12 inches overall length with a 9-inch flute length, this bit reaches deeper into workpieces than a jobber-length equivalent. The straight shank measures 0.25 inches in diameter with a 3-inch shank length, compatible with standard drill chucks.

This bit is suited for general-purpose drilling in alloy tool steel, carbon steel, and cast iron. The extra flute length makes it a practical choice for electricians, pipefitters, plumbers, and fabricators who need to drill through thick structural members, deep flanges, or stacked materials where a jobber-length bit falls short. It is appropriate for both bench drill press and handheld drill motor use in shop and field environments.

Key Features

• Letter E (0.25 inches) diameter with tight tolerance of +0.0000 to -0.0007 inches
• 118-degree standard point angle with web thinning for reduced thrust and cleaner starts
• Taper web configuration improves bit rigidity over the full flute length
• 9-inch flute length and 12-inch overall length for deep-reach applications
• Right-hand spiral flute with regular spiral type for efficient chip clearing
• Straight shank with no threading — seats directly in standard chuck jaws
• Conforms to ASME B94.11M dimensional standard

Compatibility

Designed for general-purpose drilling in alloy tool steel, carbon steel, and cast iron. Fits standard 3-jaw drill chucks accepting a 0.25-inch straight shank.

Installation Notes

This bit is installed and serviced by machinists, pipefitters, electricians, and general tradespeople using standard drill presses or handheld drill motors. Secure the straight shank firmly in the chuck and verify concentricity before drilling to prevent bit walking. Use appropriate cutting fluid or coolant for steel applications to extend bit life and maintain tolerance. Always wear eye protection and follow applicable shop safety procedures when operating drilling equipment.