Cleveland C72074 Jobber Drill Bit Letter D 0.2460 in Hss

Product Description

The CLEVELAND C72074 is a jobber-length twist drill bit sized to Letter D (0.2460 inches decimal equivalent), manufactured from high speed steel with a bright, uncoated finish. It features a 118-degree standard drill point, a regular spiral flute, and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation on entry. The straight-cylindrical shank measures 0.2460 inches in diameter, matching the drill diameter for use in standard drill chucks. Overall length is 4.0 inches with a 2.75-inch flute length, placing it squarely in the jobber-length class for general-purpose through-hole drilling. This bit conforms to ASME B94.11M and DIN 338 standards.

The C72074 is suited for general-purpose drilling in a wide range of materials including mild steel, aluminum, brass, plastics, and wood. It is a go-to drill size for machinists, maintenance technicians, electricians, and HVAC and plumbing contractors who need a reliable letter-size drill for hole sizing, tap drilling, and clearance drilling in light fabrication and field service work. The 118-degree point geometry is appropriate for most common shop and field materials encountered in trade applications.

Key Features

• Letter D size — 0.2460 inch decimal equivalent for precise hole sizing
• 118-degree standard drill point with web-thinned, tapered web for reduced thrust on entry
• High speed steel construction provides durability across general-purpose materials
• Bright, uncoated finish — no coating to chip or peel, suitable for regrinding
• Regular spiral flute with right-hand cut; 2 flutes for efficient chip clearing
• Conforms to ASME B94.11M and DIN 338 dimensional standards

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard keyed or keyless drill chuck sized to accept a 0.2460-inch straight-cylindrical shank, including benchtop drill presses, cordless and corded hand drills, and milling machine chucks.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before drilling. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend tool life. Ensure the workpiece is clamped securely before applying feed pressure. Inspect the drill point for wear or chipping before reuse; a web-thinned bit can be reground to restore cutting geometry.