M.a. Ford 20521870T Screw Machine Drill Bit 7/32 Solid Carbide

Product Description

The M.A. FORD 20521870T is a screw machine length drill bit engineered for precision drilling in demanding trade and production environments. Built from solid carbide, it delivers the rigidity and wear resistance needed when working through cast iron, stainless steel, steel, and non-ferrous metals. The bit measures 0.2188 inches (7/32 inch) in diameter with an overall length of 2.375 inches, making it suited for short-hole drilling in tight clearances. A 135-degree split point starts on contact without a center punch and reduces walking on hard surfaces. The slow spiral flute geometry is optimized for chip evacuation in the materials this bit is designed to cut.

This bit is intended for use in screw machine operations, CNC drilling, and production machining where hole accuracy and tool life are critical. The straight-cylindrical shank seats directly in standard drill chucks and collets without modification. Typical applications include drilling ferrous and non-ferrous components in manufacturing, metal fabrication, and maintenance repair operations. The 3xD flute-to-diameter ratio and parallel web configuration support consistent performance across short-depth drilling cycles. It is sold individually and is appropriate for use in both manual and automated machine setups.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive workpiece materials
• 135-degree split point reduces thrust force and eliminates center-punch requirements on most metals
• Slow spiral flute geometry promotes chip clearance when drilling cast iron, stainless steel, and steel
• Web-thinned, parallel web design lowers cutting resistance and improves hole entry performance
• Straight-cylindrical shank at 0.2188 inches diameter fits standard drill chucks and collets directly
• Diameter tolerance of +0.0000 to -0.0005 inches supports close-tolerance hole requirements

Compatibility

Designed for use in screw machine, CNC, and production drilling applications targeting cast iron, non-ferrous metal, stainless steel, and steel workpieces. Part of the M.A. FORD Series 205 screw machine length drill bit line for 0.2000 to 0.2500 inch diameter range applications.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or tooling technician with the spindle fully stopped and the machine in a safe, de-energized state. Seat the straight-cylindrical shank fully in the chuck or collet and verify runout before beginning a drilling cycle. Confirm that cutting speeds and feeds are set to values appropriate for solid carbide tooling in the specific workpiece material being drilled, as solid carbide requires different parameters than high-speed steel. Do not use this bit on materials outside its rated workpiece range, as improper application will cause premature breakage.