M.a. Ford 20628100 9/32 Inch Solid Carbide Drill Bit

Product Description

The M.A. FORD 20628100 is a screw machine length (stub length) twist drill bit designed for precision hole-making in demanding materials. Built from solid carbide with a bright, uncoated finish, it carries a 118-degree faceted drill point and a web-thinned geometry that reduces thrust and improves chip evacuation. The straight-cylindrical shank measures 0.2810 inches in diameter and 1.5 inches in length, with an overall assembled length of 2.5 inches. This is a right-hand cut, two-flute spiral design in M.A. FORD Series 206. It is installed by machinists and toolroom technicians working in production or job-shop environments.

This drill bit is rated for use in cast iron, non-ferrous metals, stainless steel, and steel. The short, rigid flute length of 1 inch and a 3xD flute-to-diameter ratio make it well suited for screw machine operations, CNC drilling centers, and drill presses where stub-length rigidity reduces deflection and improves hole location accuracy. The parallel web configuration supports consistent chip load across the full flute length. Coolant-through capability is not included in this design.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive workpiece materials
• 118-degree faceted point with web thinning for reduced entry thrust and improved centering
• Screw machine (stub) length at 2.5 inches overall for maximum rigidity in short-reach applications
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Diameter tolerance of +0.0000 to -0.0005 inches for consistent hole sizing
• Bright, uncoated finish compatible with a wide range of cutting fluids and lubricants

Compatibility

Designed for use across cast iron, non-ferrous metal, stainless steel, and steel workpieces. Fits any drill chuck or collet system accepting a 0.2810-inch straight-cylindrical shank, including standard screw machine turrets and CNC tool holders.

Installation Notes

This drill bit is installed and changed by machinists or toolroom personnel. Secure the shank fully in the chuck or collet before running the spindle, and verify runout with a dial indicator when hole tolerance is critical. Use an appropriate cutting fluid or coolant for the workpiece material to extend tool life. Inspect the cutting edges for chipping before each use, as solid carbide is brittle and susceptible to damage from interrupted cuts or improper handling.