Osg 3330550 Screw Machine Drill Bit 0.2165 in Solid Carbide

Product Description

The OSG 3330550 is a solid carbide screw machine length drill bit designed for high-performance drilling in ferrous materials. It measures 0.2165 inches (5.50 mm) in diameter with a 180-degree flat point angle and a right-hand spiral flute configuration. The straight-cylindrical shank measures 6.00 mm in diameter, and the overall length is 65.00 mm (approximately 2.56 inches). A web-thinned, tapered web design reduces thrust and improves chip evacuation at entry. This bit is suited for use in CNC machining centers, drill presses, and screw machine applications where short flute length and rigid setup are required. It is typically installed by machinists and tool-and-die professionals.

The OSG 3330550 is rated for drilling into steel, alloy steel, and cast iron. Its screw machine (stub) length provides added rigidity compared to jobber-length bits, making it well suited for tight-tolerance holes in production environments. The 2xD flute-to-diameter ratio and regular spiral type support chip clearance in shallow-depth applications. This bit does not feature coolant-through capability and is intended for external coolant or dry cutting setups depending on the workpiece material and machine specifications.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• 180-degree flat point angle for flat-bottom and through-hole applications
• Web-thinned tapered web reduces cutting force at drill entry
• Straight-cylindrical shank for standard chuck compatibility
• 2-flute spiral design promotes chip evacuation in screw machine setups
• Diameter tolerance of +0 to -0.018 mm for consistent hole sizing

Compatibility

Designed for use in steel, alloy steel, and cast iron workpieces. Fits standard straight-shank drill chucks and collets accepting a 6.00 mm shank. Part of the OSG Series 5700 screw machine length drill line covering the 0.2000 to 0.2500 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists following applicable shop safety procedures. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable tolerance for the application. Solid carbide tooling is brittle and susceptible to breakage from side loading or interrupted cuts — do not use in hand-held drills. Select appropriate cutting speed and feed rate for the workpiece material per the tooling manufacturer guidelines.