Cleveland C73458 Jobber Length Drill Bit Wire Size 30

Product Description

The CLEVELAND C73458 is a jobber-length drill bit sized to wire gauge 30, equivalent to 0.1285 inches in diameter. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, it is built for heavy-duty drilling applications where consistent hole size and clean chip evacuation matter. The 118-degree split point reduces walking on entry and requires less thrust than a conventional point. With an overall length of 2.75 inches and a flute length of 1.625 inches, it fits standard drill chucks and drill presses used in precision fabrication and assembly work. Machinists, tool-and-die technicians, and metalworking professionals reach for this bit when working to NAS 907 Type A specification tolerances.

This bit is well suited for drilling aluminum and similar non-ferrous metals in production and maintenance environments. The two-flute spiral design moves chips out of the hole efficiently, reducing heat buildup and improving surface finish in the bore. The straight-cylindrical shank seats securely in standard Jacobs-style chucks and collet holders. Typical applications include jig and fixture fabrication, sheet metal work, and close-tolerance hole preparation in aerospace and general manufacturing settings where NAS 907 Type A compliance is required.

Key Features

• Wire size 30 (0.1285 inches) with a diameter tolerance of -0.0007 to 0.0000 inches for precise, on-size holes
• 118-degree split point reduces entry thrust and minimizes bit walking on curved or flat metal surfaces
• High-speed steel construction handles intermittent cutting and moderate heat without edge breakdown
• Web-thinned, tapered web improves cutting efficiency and reduces axial load during drilling
• Bright, uncoated finish allows easy visual inspection of cutting edges and re-sharpening
• Meets NAS 907 Type A specification, making it suitable for controlled aerospace and industrial processes

Compatibility

Designed as an OEM-style replacement and standard jobber-length drill bit for use in any application requiring a wire gauge 30 diameter hole drilled to NAS 907 Type A tolerances in aluminum or comparable workpiece materials.

Installation Notes

Installation of this drill bit is performed by a machinist or qualified technician using a drill press, CNC machine, or hand drill with an appropriately sized chuck. Secure the straight-cylindrical shank fully in the chuck before operation and verify runout before drilling in tolerance-critical applications. Follow shop safety protocols including eye protection and proper workholding. Cutting speed and feed rate should be selected based on workpiece material and machine capability; consult published HSS speeds-and-feeds tables for aluminum and ferrous stock.