M.a. Ford 20503120T Screw Machine Drill Bit 0.0312 in

Product Description

The M.A. FORD 20503120T is a screw machine length drill bit engineered for precise, short-reach drilling in demanding industrial and metalworking applications. Built from solid carbide with a coated finish, this bit measures 0.0312 inches (1/32 inch) in diameter with an overall length of 1.5 inches and a flute length of 0.375 inches. The 135-degree split point reduces thrust and self-centers on contact, minimizing walking without a center punch. A slow spiral, two-flute design and web-thinned parallel web configuration improve chip evacuation and cutting efficiency. This tool is handled by machinists, tool-and-die technicians, and CNC operators working with close-tolerance bore requirements.

The 20503120T is suited for drilling cast iron, non-ferrous metals, stainless steel, and steel in production environments where stub-length rigidity is required. The screw machine length format provides increased stiffness compared to jobber-length bits, making it well-suited for drill presses, CNC machining centers, and turret lathes where deflection must be minimized at small diameters. The straight-cylindrical shank diameter matches the bit diameter at 0.0312 inches, compatible with standard collet chucks and drill chucks sized for 1/32-inch tooling.

Key Features

• Solid carbide construction for hardness and wear resistance in ferrous and non-ferrous materials
• 135-degree split point with web thinning for reduced entry thrust and accurate self-centering
• Slow spiral, two-flute design optimized for chip flow in deep and interrupted cuts
• Screw machine (stub) length at 1.5 inches overall for maximum rigidity at small diameters
• Right-hand cut with straight-cylindrical shank for standard chuck compatibility
• Diameter tolerance held to +0.0000 to -0.0005 inches for close-tolerance bore work

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring 1/32-inch diameter stub-length carbide tooling in standard collet or drill chuck setups. Primary workpiece materials include cast iron, non-ferrous metal, stainless steel, and steel per manufacturer specification.

Installation Notes

Installation and use of small-diameter carbide drill bits should be performed by qualified machinists or CNC operators familiar with appropriate spindle speeds and feed rates for carbide tooling. Secure the straight-cylindrical shank firmly in a properly sized collet or drill chuck before operation to prevent runout. Carbide is brittle - avoid side-loading, interrupted feeds, or excessive hand pressure that can cause tip fracture. Power down and de-energize the machine spindle completely before changing or inspecting the bit.