Cleveland C73443 Jobber Drill Bit Wire 15 Hss 118 Degree

Product Description

The CLEVELAND C73443 is a jobber-length drill bit in wire gauge size 15, with a decimal diameter of 0.1800 inches. It is manufactured from high speed steel (HSS) with a bright, uncoated finish and features a 118-degree split point for clean entry and reduced walking on start. The spiral flute geometry is a regular helix with a tapered web configuration and web-thinned tip for lower thrust requirements. At 3-3/8 inches overall length with a 2-3/16-inch flute length, this is a heavy-duty grade bit suited for production and maintenance drilling. Licensed machinists, millwrights, HVAC technicians, and plumbers routinely use this size for sheet metal, structural, and mechanical assembly work.

The C73443 is designed primarily for drilling aluminum and similar non-ferrous materials, though the HSS construction handles a broad range of general-purpose applications. The straight-cylindrical shank, measuring 0.1800 inches in diameter and 1.1875 inches in shank length, seats directly in standard three-jaw drill chucks without adapters. This bit meets NAS 907 Type A specification, making it appropriate for aerospace-adjacent and precision fabrication environments where dimensional tolerance and material consistency are controlled. It ships individually and is subject to a minimum order quantity of 12 units per order, making it a practical stock item for shop cribs and service vans.

Key Features

• Wire size 15 at 0.1800 inches decimal diameter with a tight tolerance of -0.0007 to 0.0000 inches
• 118-degree split point reduces thrust and minimizes center-punch requirement
• High speed steel construction with bright, uncoated finish for general-purpose metal drilling
• Web-thinned, tapered web design lowers cutting resistance on entry
• Regular spiral flute with right-hand cut for standard drill chuck compatibility
• Meets NAS 907 Type A specification for controlled-tolerance applications

Compatibility

Designed as a direct-fit replacement or stock drill bit for any standard three-jaw drill chuck accepting a 0.1800-inch straight-cylindrical shank. Intended for drilling aluminum as a primary workpiece material; general-purpose HSS construction also suits mild steel, plastics, and composite materials in light to medium-duty applications.

Installation Notes

A licensed machinist or qualified tradesperson should inspect the shank and cutting edges before seating the bit in the chuck. Secure the shank fully in the chuck jaws and verify concentricity before beginning a cut. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. Use appropriate cutting fluid or lubrication when drilling metals to extend tool life and maintain dimensional accuracy.