M.a. Ford. 20624200 Screw Machine Drill Bit 0.242 in

Product Description

The M.A. FORD. 20624200 is a solid carbide screw machine length drill bit with a 0.242 inch (Letter C) diameter, designed for high-precision drilling in demanding shop and production environments. Built to Series 206 specifications, this bit features a 118-degree faceted point angle, a right-hand spiral flute, and a web-thinned parallel web configuration that reduces thrust and improves chip evacuation. The straight-cylindrical shank measures 0.242 inch in diameter and 1.5 inches in length. Machinists, tool and die workers, and CNC operators use this type of bit for short-hole drilling where rigidity and accuracy are critical.

This screw machine length drill bit is suited for drilling cast iron, non-ferrous metals, stainless steel, and steel in production and job shop settings. The shorter body length relative to a jobber bit provides added rigidity, making it well-suited for tight-tolerance work on manual mills, drill presses, and CNC machining centers. Its 1 inch flute length covers a 3xD flute-to-diameter ratio, keeping chip loads manageable during moderate-depth drilling operations.

Key Features

• Solid carbide construction for hardness and wear resistance in ferrous and non-ferrous applications
• 118-degree faceted point angle with web-thinned parallel web for reduced entry thrust
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Straight-cylindrical shank for standard chuck compatibility
• Diameter tolerance of +0.0000 to -0.0005 inch for close-tolerance hole sizing
• Bright/uncoated finish — compatible with coolant or dry cutting as application demands

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard straight-shank drill chucks and collet-style toolholders where a 0.242 inch (Letter C) diameter short-length carbide bit is specified.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists or tooling technicians familiar with cutting tool setup and speeds and feeds for carbide tooling. Secure the shank fully in a drill chuck or collet before operation and verify runout before cutting. Carbide is brittle — avoid side loading, interrupted cuts without proper setup, or dropping the bit on hard surfaces. Power down and de-energize the machine before changing tooling.