M.a. Ford. 30211600C Micro Drill Bit No.31 Solid Carbide

Product Description

The M.A. FORD. 30211600C is a solid carbide micro drill bit sized to wire gauge No. 31, equivalent to 0.1160 inches in diameter. It features a 130-degree drill point angle and a fast spiral flute geometry, making it well suited for tight-tolerance hole making in hard and abrasive workpiece materials. The overall length is 1.5 inches with a flute length of 0.4800 inches and a straight cylindrical shank diameter of 1/8 inch. The bright, uncoated finish leaves the carbide substrate exposed for maximum hardness and edge integrity. This bit is part of the Series 302 lineup and is intended for installation by machinists and precision tooling professionals working in production or job-shop environments.

This micro drill bit is rated for use in cast iron, hardened steel, stainless steel, carbon steel, alloy steel, tool steel, aluminum, non-ferrous metals, and special alloys. The right-hand cutting direction and fast spiral flute type are appropriate for general-purpose drilling operations on CNC machining centers, drill presses, and precision hand-held spindles where small-diameter, high-accuracy holes are required. It is sold individually with a minimum order quantity of one.

Key Features

• Wire gauge No. 31 diameter: 0.1160 inches for precision small-bore applications
• 130-degree drill point angle for improved centering and reduced thrust in hard materials
• Solid carbide construction for superior hardness and wear resistance versus high-speed steel
• Fast spiral flute type promotes efficient chip evacuation in deep or interrupted cuts
• Straight cylindrical 1/8-inch shank fits standard collets and chucks without adapters
• Diameter tolerance of +0.0000 to -0.0005 inches for consistent, repeatable hole sizing
• Manufactured to ISO 9001:2015 quality standards

Compatibility

Designed as an OEM-style replacement or direct-application micro drill bit for use in standard 1/8-inch straight-shank collets and drill chucks compatible with wire gauge No. 31 tooling. Primary workpiece material codes K, P, and N cover cast iron, steel, and non-ferrous metal classifications per ISO material groupings.

Installation Notes

Installation and use of this tool should be performed by qualified machinists or tooling technicians familiar with small-diameter carbide tooling. Ensure the spindle and workpiece are fully secured and that spindle speed and feed rate are set per the material being drilled before engaging the tool. Carbide micro drills are brittle and susceptible to breakage from side loading, vibration, or misalignment - avoid excessive force or runout. This item is noted as non-returnable and non-cancelable; inspect upon receipt before use.