M.a. Ford. 20406700 Jobber Drill Bit 51 Solid Carbide

Product Description

The M.A. FORD. 20406700 is a solid carbide jobber length drill bit in wire gauge size 51, equivalent to 0.0670 inches in decimal diameter. Designed for general purpose drilling, it features a 118-degree faceted point, a two-flute regular spiral configuration, and a web-thinned tapered web for improved chip evacuation and reduced thrust during penetration. The bright, uncoated finish makes it well suited for a wide range of metalworking applications. Overall length is 1.5 inches with a flute length of 0.75 inches. The straight-cylindrical shank matches the decimal diameter at 0.0670 inches, allowing direct chuck mounting without adapters. This bit is manufactured to ISO 9001:2015 standards.

This drill bit is appropriate for use in light machining, maintenance, and fabrication environments where precision small-diameter drilling is required. It is rated for use in cast iron, non-ferrous metals, stainless steel, and steel. The 5xD flute-to-diameter ratio supports chip clearance in moderate-depth holes. Machinists, tool and die makers, and metal fabricators working on close-tolerance applications will find the diameter tolerance of -0.0005 to 0.0000 inches suitable for accurate hole sizing. The bit does not support coolant-through delivery, so external coolant or cutting fluid should be applied at the workpiece when drilling stainless steel or hardened materials.

Key Features

• Solid carbide construction for rigidity and wear resistance in metalworking applications
• 118-degree faceted drill point with web thinning for reduced entry thrust
• Two-flute regular spiral design supports chip evacuation in shallow-to-moderate depth holes
• Diameter tolerance of -0.0005 to 0.0000 inches for precise hole sizing
• Bright, uncoated finish compatible with a broad range of workpiece materials
• Manufactured under ISO 9001:2015 quality certification

Compatibility

Rated for primary workpiece materials including cast iron, non-ferrous metal, stainless steel, and steel. Compatible with standard drill chucks accepting a 0.0670-inch straight-cylindrical shank. Part of M.A. FORD. Series 204, covering the 0.0500 to 0.1000 inch decimal diameter range.

Installation Notes

Installation is performed by machinists or toolroom technicians using a standard keyless or keyed drill chuck rated for the shank diameter. Ensure the workpiece is securely fixtured before drilling to prevent bit deflection or breakage at this small diameter. Carbide bits are brittle and should not be used in hand drills or in setups with excessive runout. Apply cutting fluid externally when drilling stainless steel or cast iron to extend tool life and manage heat buildup.