M.a. Ford. 20504650 Drill Bit Size 56 Solid Carbide

Product Description

The M.A. FORD. 20504650 is a screw machine length drill bit designed for precision drilling in tight-clearance applications. Built from solid carbide, this bit features a 135-degree split point that reduces walking at entry and lowers thrust force required at the spindle. A slow-spiral flute geometry supports chip evacuation in deep holes for its diameter class. The wire gauge size 56 corresponds to a decimal diameter of 0.0465 inches, with a total overall length of 1.5 inches and a flute length of 0.5 inches. The straight cylindrical shank measures 0.0465 inches in diameter with a shank length of 1 inch. Diameter tolerance is held to plus 0.0000 and minus 0.0005 inches for consistent, repeatable hole size. The bright uncoated finish suits applications where coating adhesion or contamination is a concern.

This bit is well suited for drilling in steel, stainless steel, cast iron, aluminum and non-ferrous metals, high-temperature alloys, and hardened materials. The screw machine length body keeps the tool short and rigid, making it a standard choice for drill press, CNC, and turret lathe operations where stub-length tools are preferred for reduced runout and improved hole location accuracy. The 3xD flute-to-diameter ratio and web-thinned geometry support performance in both production and maintenance-repair environments. This bit is sold and packaged individually.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and hardened workpiece materials
• 135-degree split point reduces drill walk and lowers entry thrust force
• Slow spiral flute promotes controlled chip evacuation at small diameters
• Web-thinned design reduces cutting resistance and extends tool life
• Screw machine length body provides maximum rigidity and minimal deflection
• Diameter tolerance of plus 0.0000 to minus 0.0005 inches for consistent hole sizing

Compatibility

Designed as a screw machine length replacement or production drill bit for use in standard straight-shank drill chucks and collet holders accepting a 0.0465-inch shank diameter, suitable for steel, stainless steel, cast iron, aluminum, non-ferrous metals, high-temperature alloys, and hardened materials.

Installation Notes

This bit is installed by a machinist or toolroom technician into any straight-shank chuck or collet system with appropriate bore clearance for a 0.0465-inch shank. Ensure the spindle and workholding device are fully stopped and de-energized before inserting or removing the bit. At this diameter, solid carbide is brittle — avoid side loading, interrupted cuts without proper feeds, or drops onto hard surfaces. Verify runout at the spindle before production use to maintain diameter tolerance.