M.a. Ford. 20508600C Drill Bit No. 44 0.0860 in Solid Carbide

Product Description

The M.A. FORD. 20508600C is a screw machine length drill bit designed for precision drilling in tight-clearance applications. Built from solid carbide, it features a 135-degree split point with web thinning to reduce thrust and improve centering accuracy. The bit measures 0.0860 inches in diameter (No. 44 wire gauge) with an overall length of 1.75 inches and a flute length of 0.75 inches. A slow spiral, two-flute geometry promotes chip evacuation in the materials this bit is rated for. Right-hand cut orientation and a straight cylindrical shank make it compatible with standard drill chucks and collet holders used in production and maintenance machining environments.

This drill bit is suited for drilling cast iron, non-ferrous metals, stainless steel, and steel. Its screw machine length profile is shorter than jobber-length bits, providing increased rigidity and reduced deflection when working on drill presses, CNC machining centers, and manual lathes with turret tooling. It is a common choice for machinists, toolroom technicians, and maintenance professionals who need repeatable hole quality in small-diameter applications. The 3xD flute-to-diameter ratio supports controlled chip flow without excessive flute length that would compromise stiffness at this diameter.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive workpiece materials
• 135-degree split point with web thinning reduces walking and lowers required feed force
• Screw machine length body increases rigidity and minimizes deflection at 0.0860 inch diameter
• Slow spiral flute geometry promotes chip control in cast iron and stainless steel
• Right-hand cut with straight cylindrical shank fits standard drill chucks and collet systems
• Diameter tolerance held to +0.0000 to -0.0005 inches for consistent hole sizing

Compatibility

Designed for use in standard straight-shank drill chucks and collet holders accepting a 0.0860-inch shank diameter. Rated for drilling cast iron, non-ferrous metal, stainless steel, and steel workpieces.

Installation Notes

This bit is installed by a machinist or toolroom technician into a drill chuck or collet holder rated for the 0.0860-inch shank diameter. Ensure the machine spindle is fully stopped and locked out before changing tooling. Solid carbide tooling is brittle and should not be subjected to side loading or intermittent contact with interrupted cuts without verifying the setup is rigid. Use the manufacturer-recommended speeds and feeds for the specific workpiece material to avoid premature edge failure.