Sgs 51781 Carbide Screw Machine Drill Bit 0.2210 in

Product Description

The SGS 51781 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. It measures 0.2210 inches in diameter (Wire Size 2) with a 145-degree drill point angle and an AlTiN coating for extended tool life and heat resistance. The overall length is 2.625 inches, making it a compact, stub-length tool suited for applications where reach is limited and rigidity is critical. Licensed machinists and tooling technicians rely on this bit when drilling tight-tolerance holes in hard alloys, titanium, and similar high-strength materials where tool deflection and heat buildup are primary concerns.

This drill bit is intended for use in CNC machining centers, drill presses, and manual machine tools where screw machine length geometry provides added stability. It is well-suited for production environments drilling alloy steels and titanium alloys. The web-thinned, tapered web configuration reduces thrust load at entry, improving hole quality and reducing the risk of workpiece deformation. It is a practical choice for job shops and aerospace or industrial manufacturing operations requiring consistent, repeatable results in difficult-to-machine materials.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard-material drilling
• AlTiN coating provides heat and oxidation resistance, extending tool life in dry or semi-dry cutting conditions
• 145-degree split point angle reduces walking and improves penetration without a center punch
• Web-thinned tapered web lowers thrust requirements and improves chip evacuation
• Screw machine length (2.625 inches OAL) delivers greater rigidity compared to jobber-length bits
• Diameter tolerance of +0.0002 to +0.0006 inches supports tight-tolerance hole sizing
• Maximum drilling depth of 0.8281 inches with a flute-to-diameter ratio of 3xD

Compatibility

Designed as an OEM-style replacement and standard production drill bit for use in straight-shank chuck systems on CNC machining centers, drill presses, and manual mills requiring a 0.2210-inch diameter screw machine length bit.

Installation Notes

This bit is installed and operated by qualified machinists or tooling technicians. Secure the straight cylindrical shank firmly in a drill chuck or collet rated for the spindle speed appropriate to the workpiece material and bit diameter. Ensure the machine is fully powered down and spindle is locked before changing tooling. Do not exceed the recommended maximum drilling depth of 0.8281 inches per pass without retracting to clear chips.