M.a. Ford. 20616100 Screw Machine Drill Bit 0.161 in

Product Description

The M.A. FORD. 20616100 is a solid carbide screw machine length drill bit designed for high-precision drilling in demanding production environments. Built to Series 206 specifications, this bit measures 0.161 inches in diameter with an overall length of 2 inches and a flute length of 0.75 inches. The 118-degree faceted point and web-thinned geometry reduce entry force and improve centering accuracy. The bright/uncoated finish maintains dimensional integrity and suits applications where coating interaction with workpiece material is a concern. Licensed machinists, tool and die makers, and CNC machine operators are the primary users of this bit.

This drill bit is suited for short-reach, high-accuracy drilling in cast iron, non-ferrous metals, stainless steel, and steel. The screw machine length profile — shorter overall than jobber-length bits — provides added rigidity, making it a practical choice for turret lathes, screw machines, CNC machining centers, and drill presses where minimizing deflection is critical. The 3xD flute-to-diameter ratio supports chip evacuation in moderate-depth holes.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive workpiece materials
• 118-degree faceted drill point with web thinning for reduced thrust and improved self-centering
• Right-hand spiral flute promotes efficient chip evacuation in standard rotation setups
• Straight-cylindrical shank fits standard drill chucks and collet systems without modification
• Bright/uncoated finish preserves tight diameter tolerance of +0.0000 to -0.0005 inches
• Short screw machine length adds rigidity and reduces deflection versus jobber-length alternatives

Compatibility

Designed as an OEM-style cutting tool for use in screw machines, CNC machining centers, turret lathes, and drill presses accepting a straight-cylindrical shank drill bit with a 0.161-inch diameter.

Installation Notes

This bit should be installed and operated by qualified machinists or CNC machine operators. Secure the shank fully in a properly sized collet or drill chuck before operation, and verify runout before drilling. Solid carbide tooling is brittle — avoid side loading or interrupted cuts that exceed the tool design. Follow machine manufacturer guidelines and applicable shop safety standards for spindle speed and feed rate selection based on workpiece material.