Cleveland C73401 5/64 Inch Hss Jobber Drill Bit

Product Description

The CLEVELAND C73401 is a jobber-length drill bit designed for precision drilling in metal fabrication, maintenance, and light manufacturing applications. Built from high speed steel with a bright uncoated finish, this bit features a 118-degree split point and a regular spiral flute for efficient chip evacuation. The 5/64 inch (0.0781 inch) diameter and 2-inch overall length make it well suited for small-diameter hole drilling where accuracy and clean entry are required. Web-thinned construction reduces thrust force at the tip, supporting cleaner starts without a center punch on softer substrates. The straight-cylindrical shank seats securely in standard keyless or keyed drill chucks.

This bit is primarily suited for aluminum and similar non-ferrous materials, though its high speed steel construction handles mild steel and plastics in general shop conditions. It fits into standard jobber-length drill sets and is a direct fit for applications requiring NAS 907 Type A compliance. Machinists, maintenance technicians, pipefitters, and HVAC fabricators commonly use bits in this diameter range for pilot holes, sheet metal work, and small-diameter through-holes in enclosures and brackets.

Key Features

• 5/64 inch diameter with tight tolerance of -0.0005 to 0.0000 inches for consistent hole sizing
• 118-degree split point reduces walking and lowers required thrust force
• Web-thinned, tapered web configuration improves chip flow and reduces heat buildup
• Regular spiral flute with right-hand cut for use in standard drill presses and hand drills
• Bright uncoated finish suitable for dry drilling in aluminum and non-ferrous stock
• Meets NAS 907 Type A specification for heavy-duty grade jobber-length bits

Compatibility

Designed as an OEM-style replacement or direct-use jobber-length drill bit meeting NAS 907 Type A standards, compatible with any standard straight-shank drill chuck accepting 0.0781 inch shanks.

Installation Notes

Secure the shank fully in the chuck before operation and verify chuck tightness to prevent slippage on small-diameter bits. Use appropriate RPM for the workpiece material — higher speeds are generally suitable for aluminum, lower speeds for steel. Wear appropriate eye protection per ANSI Z87.1. Inspect the cutting edges before each use; discard bits showing chipping or deformation rather than attempting field resharpening on bits this size.