M.a. Ford 20402500 Carbide Jobber Drill Bit No. 72

Product Description

The M.A. FORD 20402500 is a solid carbide jobber-length drill bit sized to No. 72 wire gauge, equal to 0.025 inches in diameter. It features a 118-degree faceted drill point and a two-flute regular spiral design with web thinning for improved chip evacuation and reduced thrust at entry. The straight cylindrical shank and 1.5-inch overall length suit compact drilling operations in tight setups. Manufactured under ISO 9001:2015 certification, this bit is built for general-purpose drilling in production and maintenance environments where small-diameter precision holes are required. Machinists, toolmakers, and drill press operators are the typical end users.

This bit is suited for drilling cast iron, non-ferrous metals, stainless steel, and carbon steel. The solid carbide construction maintains cutting-edge hardness in abrasive and harder workpiece materials where high-speed steel bits wear prematurely. The bright uncoated finish makes it appropriate for general-purpose applications where coating chemistry does not need to be matched to a specific workpiece material. A 5xD flute-to-diameter ratio supports adequate chip clearance for the 0.025-inch diameter. Typical use cases include CNC machining centers, drill presses, and manual machining operations requiring close-tolerance small holes.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 118-degree faceted point reduces walk and improves hole entry accuracy
• Web-thinned, tapered web design lowers cutting thrust on small-diameter entry
• Regular spiral flute with 5xD ratio supports chip evacuation in short-depth holes
• Bright uncoated finish suitable for general-purpose multi-material applications
• ISO 9001:2015 certified manufacturing for consistent dimensional tolerance

Compatibility

Designed for use in standard straight-shank drill chucks and collets accepting a 0.025-inch shank diameter. Compatible workpiece materials include cast iron, non-ferrous metals, stainless steel, and steel as specified by the manufacturer.

Installation Notes

Install in a properly sized collet or drill chuck rated for the 0.025-inch shank diameter and confirm runout before drilling. Secure the workpiece firmly to prevent movement on tool entry, which is critical at this diameter to avoid bit breakage. Solid carbide bits are brittle compared to high-speed steel and should not be used in setups with excessive vibration or lateral load. Follow machine manufacturer feeds and speeds guidelines for carbide tooling when establishing cutting parameters.