Cleveland C09748 Taper Length Drill Bit 5/16 in Hss

Product Description

The CLEVELAND C09748 is a taper length, high-speed steel drill bit designed for general-purpose drilling in ferrous and non-ferrous metals. Built to Series 950E standards and conforming to ASME B94.11M, this bit features a 5/16-inch straight shank, a 118-degree standard point angle, and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The spiral flute geometry and right-hand cutting direction are suited for production drilling and field maintenance work performed by machinists, pipefitters, plumbers, and HVAC technicians working with structural and mechanical assemblies.

This drill bit is intended for use on alloy tool steel, carbon steel, and cast iron. At 12 inches overall length with a 9-inch flute length, it reaches deeper hole depths than standard-length bits without requiring an extension. The 3-inch shank length provides adequate grip in both keyed and keyless chucks. It is well suited for drilling through heavy-gauge steel plate, pipe flanges, structural steel, and cast iron fittings in residential and commercial mechanical installations.

Key Features

• High-speed steel construction rated for alloy tool steel, carbon steel, and cast iron applications
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• 9-inch spiral flute length provides deep hole capability and efficient chip removal
• 12-inch overall length extends reach without an extension for structural and pipe work
• Right-hand cut with straight shank — fits standard drill chucks without adapters
• Conforms to ASME B94.11M dimensional standards for consistent fit and performance

Compatibility

Designed as an OEM-style replacement or direct-use taper length drill bit compatible with drilling in alloy tool steel, carbon steel, and cast iron per Series 950E specifications. Fits any standard drill chuck accepting a 5/16-inch straight shank.

Installation Notes

Installation and use should be performed by a qualified machinist or trade professional familiar with metal drilling operations. Secure the workpiece fully before drilling and confirm the chuck is tightened to prevent slippage. Use appropriate cutting fluid when drilling cast iron or alloy steel to extend bit life and control heat. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.