M.a. Ford. 20420900 Solid Carbide Jobber Drill Bit

Product Description

The M.A. FORD. 20420900 is a solid carbide jobber-length drill bit in wire size No. 4, with a decimal diameter of 0.2090 inches. It features a 118-degree faceted point and a web-thinned, tapered web construction that reduces thrust and improves chip clearance at entry. The straight-cylindrical shank measures 0.2090 inches in diameter. Overall length is 3.0 inches, with a flute length of 1.75 inches. The bit runs right-hand cut with a regular spiral flute and ships in a bright, uncoated finish. This is a general-purpose tool rated under ISO 9001:2015 certified manufacturing standards. Licensed machinists, toolroom operators, and maintenance trades are the typical users.

This drill bit is suited for general-purpose drilling in a range of production and maintenance environments. Primary workpiece materials include cast iron, non-ferrous metals, stainless steel, and steel, covering material codes K, M, N, and P. The 5xD flute-to-diameter ratio supports moderate-depth hole applications in both manual and CNC setups. It is well matched to applications where a standard jobber reach is sufficient and carbide grade performance is preferred over high-speed steel.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials
• 118-degree faceted point with web-thinned, tapered web for reduced entry thrust
• Regular right-hand spiral flute for efficient chip evacuation
• 0.2090-inch decimal diameter, wire size No. 4, straight-cylindrical shank
• 3.0-inch overall length with 1.75-inch flute length, 5xD ratio
• Bright, uncoated finish; no coolant-through requirement
• Manufactured under ISO 9001:2015 certified quality standards

Compatibility

Designed as a general-purpose jobber-length carbide drill bit compatible with standard drill chucks and CNC toolholders accepting a 0.2090-inch straight-cylindrical shank.

Installation Notes

Install and removal should be performed with the spindle powered off and the machine in a locked-out state per applicable OSHA lockout/tagout procedures. Secure the shank fully in the chuck or toolholder to the minimum grip depth recommended by the toolholder manufacturer. Solid carbide is brittle and can fracture under side-load or interrupted cuts; verify setup rigidity before running. Speeds and feeds should be selected based on workpiece material, machine capability, and shop standards.