M.a. Ford. 20509350 Carbide Screw Machine Drill Bit 42

Product Description

The M.A. FORD. 20509350 is a solid carbide screw machine length drill bit designed for precision drilling in demanding shop and production environments. Measuring 0.0935 inches in diameter (Wire Size 42), it features a 135-degree split point with web thinning for reduced thrust and accurate self-centering on entry. The two-flute slow spiral design with a straight-cylindrical shank suits high-speed drilling operations where hole quality and tool life are priorities. Machinists, tool and die makers, and production drilling technicians working with tight tolerances will find this bit a reliable choice for short-hole applications.

This drill bit is suited for use on cast iron, non-ferrous metals, stainless steel, and steel. The screw machine length format provides added rigidity compared to jobber-length bits, making it well matched to drill press, CNC machining center, and manual lathe operations where stub-length reach is sufficient. The bright uncoated finish is appropriate for applications where coating interaction with workpiece material is a concern, and the solid carbide construction supports higher cutting speeds than high-speed steel alternatives.

Key Features

• Solid carbide construction for extended tool life on hard and abrasive materials
• 135-degree drill point angle with web thinning reduces walking and entry thrust
• Slow spiral flute geometry suited to cast iron, stainless steel, and non-ferrous metals
• Screw machine length provides greater rigidity than jobber-length bits in short-reach setups
• Bright uncoated finish compatible with a wide range of workpiece materials
• Diameter tolerance of +0.0000 to -0.0005 inches for precise hole sizing

Compatibility

Designed for use on cast iron, non-ferrous metal, stainless steel, and steel workpieces. Part of M.A. FORD. Series 205 screw machine length carbide drill bits covering the 0.0000 to 0.1000 inch diameter range.

Installation Notes

This drill bit is intended for use by machinists and production drilling technicians familiar with carbide tooling requirements. Secure the straight-cylindrical shank firmly in a collet or drill chuck rated for the spindle speed being used. Carbide is brittle compared to high-speed steel — avoid side loading, interrupted cuts without proper feed rate adjustment, and dropping the tool. Follow machine manufacturer guidelines for spindle speed and feed rate when drilling the listed workpiece materials.