M.a. Ford 20629690 Screw Machine Drill Bit 19/64

Product Description

The M.A. FORD 20629690 is a solid carbide screw machine length drill bit sized at 19/64 inch (0.2969 inches) with a 118-degree faceted point angle. Designed for short-reach, high-rigidity drilling applications, this bit runs a right-hand spiral flute configuration with web thinning to reduce thrust and improve chip evacuation. The bright/uncoated finish preserves the as-ground carbide edge, making it well suited for abrasive and hard materials where coatings can interfere with surface adhesion. Machinists and toolroom professionals use this bit for precision hole work where tolerances and tool life both matter. Overall length is 2.5 inches with a straight cylindrical shank.

This drill bit is built for use on ferrous and non-ferrous workpiece materials including cast iron, stainless steel, carbon steel, and non-ferrous metals. The screw machine (stub) length body reduces overhang and deflection, making it the right choice for CNC machining centers, knee mills, and drill presses where rigidity is critical and deep-hole reach is not required. The 3xD flute-to-diameter ratio supports chip clearing in short, interrupted cuts common in production environments.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 118-degree faceted point with web thinning to lower entry thrust and improve centering
• Right-hand spiral flute promotes efficient chip evacuation
• Bright/uncoated finish preserves sharp carbide geometry for clean hole entry
• Straight cylindrical shank (0.2969 inches diameter) for standard collet and chuck compatibility
• Diameter tolerance of +0.0000 to -0.0005 inches for tight-tolerance hole requirements

Compatibility

Designed as a screw machine length drill bit for use in CNC machining centers, knee mills, and drill presses accepting a straight cylindrical shank; compatible with workpiece materials including cast iron, non-ferrous metal, stainless steel, and steel per M.A. FORD Series 206 specifications.

Installation Notes

Installation and use of this bit should be performed by a qualified machinist or toolroom professional. Secure the shank fully in a collet, chuck, or toolholder before operation and verify runout before cutting. Power down and lock out the machine spindle before changing or inspecting tooling. Do not exceed the recommended feed and speed range for the workpiece material and machine setup.