M.a. Ford 20709950 Drill Bit Size 39 Solid Carbide

Product Description

The M.A. FORD 20709950 is a solid carbide screw machine length drill bit in wire gauge Size 39, equal to 0.0995 inches in decimal diameter. Built for high-precision drilling, this bit features a right-hand spiral flute design with a brad point and a straight cylindrical shank. The overall length is 1.8125 inches, with a flute length of 0.5 inches and a shank length of 1.3125 inches. With a diameter tolerance of +0.0000 to -0.0005 inches, this bit delivers tight, repeatable hole sizes. The bright, uncoated finish keeps the carbide substrate exposed for optimal heat dissipation in appropriate applications. Licensed machinists, toolroom technicians, and precision manufacturing pros are the primary users.

This drill bit is optimized for use in non-ferrous metals such as aluminum, brass, copper, and similar materials. The screw machine length format - shorter than jobber length - provides added rigidity and reduced runout, making it well suited for CNC machining centers, drill presses, and screw machines where depth is controlled and workpiece setup is fixed. The 3xD flute-to-diameter ratio supports chip evacuation in short-hole applications. Single-margin geometry keeps the cutting profile clean in soft, non-ferrous stock.

Key Features

• Solid carbide construction for wear resistance in non-ferrous metal drilling
• Wire gauge Size 39 with 0.0995 inch decimal diameter and tight +0.0000 to -0.0005 inch tolerance
• Brad point geometry for accurate entry and reduced walking on smooth surfaces
• Right-hand spiral flute, 2-flute configuration for efficient chip removal
• Screw machine length format adds rigidity and reduces deflection versus jobber length
• Bright, uncoated finish with no coating buildup on cutting edge

Compatibility

Designed for use in standard straight-shank drill chucks and collet systems accepting a 0.0995 inch diameter shank. Primary workpiece material is non-ferrous metal per Series 207 application guidelines.

Installation Notes

This bit is installed by qualified machinists or toolroom technicians in compatible drill chucks or collet holders. Ensure the machine spindle is fully stopped and the chuck is securely tightened before operation. Solid carbide is brittle and susceptible to chipping if subjected to side loads or impact - use in rigid setups only and avoid hand-held drilling applications. Confirm the correct spindle speed for the workpiece material and bit diameter before starting the cut.