Cleveland C73434 Jobber Drill Bit No.6 Hss

Product Description

The CLEVELAND C73434 is a No. 6 wire-size jobber-length drill bit manufactured from high-speed steel (HSS) with a bright, uncoated finish. It carries a 118-degree split point and a web-thinned, tapered-web configuration that reduces entry force and improves centering on start. The 2-flute right-hand spiral design provides efficient chip evacuation during through-hole drilling. At 3.75 inches overall length with a 2.5-inch flute and a straight-cylindrical shank, it fits standard 3-jaw drill chucks. This is a heavy-duty grade bit conforming to NAS 907 Type A. It is used by machinists, pipefitters, electricians, and general trade mechanics drilling in aluminum and similar workpiece materials.

The C73434 is suited for production and maintenance drilling in aluminum as its primary workpiece material, though it also performs in light ferrous and non-ferrous stock. The 0.2040-inch decimal diameter falls within the 0.2000 to 0.2500-inch size range of the Series 2228 lineup. The straight-cylindrical shank seats cleanly in handheld drills, drill presses, and CNC turret applications. No coolant-through provision is present, so flood, mist, or dry cutting techniques apply depending on setup and material.

Key Features

• No. 6 wire size, 0.2040-inch decimal diameter with a tolerance of -0.0007 to 0.0000 inches for consistent hole sizing
• 118-degree split point with web thinning reduces thrust and promotes self-centering without a center punch
• High-speed steel construction provides heat resistance for hand-drill and drill-press applications
• Bright uncoated finish suitable for aluminum and general-purpose drilling where coating is not required
• Right-hand 2-flute regular spiral for reliable chip clearance and smooth cutting action
• Meets NAS 907 Type A specification — heavy-duty grade for repeatable dimensional accuracy

Compatibility

Designed as an OEM-specification replacement or stock jobber-length drill bit for use in standard straight-shank drill chucks across handheld drills, drill presses, and compatible CNC turret tooling accepting a 0.2040-inch straight-cylindrical shank.

Installation Notes

A licensed machinist or qualified trade mechanic should secure the shank fully in the chuck jaws before operation, verifying concentricity to prevent runout. Ensure the drill press or handheld driver is powered off and unplugged before inserting or removing the bit. Apply appropriate cutting fluid or mist when drilling aluminum at higher feed rates to extend bit life and maintain hole tolerance. Do not exceed the rated speed range for the workpiece material and bit diameter.