M.a. Ford. 22403940 Carbide Jobber Drill 0.0394 in

Product Description

The M.A. FORD. 22403940 is a solid carbide jobber-length drill bit designed for precision small-diameter hole-making in demanding production environments. It measures 0.0394 inches (1.00 mm) in diameter with an overall length of 1.3386 inches (34.00 mm) and a flute length of 0.4724 inches (12.00 mm). The 118-degree facet point and web-thinned tip promote accurate entry and reduce thrust in both ferrous and non-ferrous materials. Machinists, tool-and-die workers, and CNC operators working with close-tolerance components rely on this bit for consistent, repeatable results in high-speed drilling applications.

This drill is suited for general-purpose drilling in steel, aluminum, and other non-ferrous materials across light manufacturing, precision machining, and tool-room environments. The 5xD flute-to-diameter ratio supports chip evacuation in short, controlled drilling cycles. Its straight cylindrical shank fits standard drill chucks and collets without modification, making it a practical option for both manual machines and CNC machining centers running small-diameter work.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 118-degree facet point with web-thinned tip for reduced thrust and accurate hole entry
• Right-hand cutting with regular spiral flutes for efficient chip evacuation
• Bright/uncoated finish suitable for use with or without cutting fluid
• Straight cylindrical shank at 0.0400 inches (1.00 mm) diameter fits standard collets and chucks
• Conforms to DIN 338 specification and manufactured under ISO 9001:2015 certified processes

Compatibility

Designed as a general-purpose replacement or production drill for applications requiring a 1.00 mm (0.0394 inch) diameter hole in steel, aluminum, and non-ferrous workpiece materials per DIN 338 Series 224 standards.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with small-diameter carbide tooling. Ensure the machine spindle and chuck or collet are clean and true before seating the shank, as runout causes premature breakage in carbide drills of this diameter. Carbide is brittle — avoid side loading, interrupted cuts without appropriate feeds, or re-chucking with worn collets. Follow machine manufacturer feed and speed guidelines for the workpiece material being drilled.