Osg 3334358 Screw Machine Drill Bit 7.30 Mm Carbide

Product Description

The OSG 3334358 is a solid carbide screw machine length drill bit engineered for high-performance drilling in ferrous and hard materials. It features a 7.30 mm diameter, a 180-degree flat-bottom point geometry, and an EgiAs multi-layer proprietary coating designed to extend tool life in demanding applications. The overall length is 75.00 mm (2.9528 inches), with a flute length of 34.00 mm and an 8.00 mm straight cylindrical shank. The web-thinned, tapered web configuration reduces entry thrust and improves chip evacuation. This bit ships individually and is suited for production machining environments where hole quality and tool longevity are priorities.

The OSG 3334358 is designed for drilling steel, cast iron, and hardened materials in screw machine and production drilling applications. The 3xD flute-to-diameter ratio makes it appropriate for shallow to moderate-depth holes where rigidity and runout control are critical. It is commonly used in CNC machining centers, turret lathes, and screw machines where through-coolant delivery is available. The coolant-through design supports chip flushing and thermal management in high-cycle operations. Machinists and tool room professionals working with tight-tolerance bores will find the diameter tolerance of plus 0 to minus 0.022 mm appropriate for precision fitment work.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard workpiece materials
• EgiAs multi-layer coating extends tool life in steel, cast iron, and hardened materials
• 180-degree flat-bottom point eliminates the need for spot drilling on flat surfaces
• Coolant-through design supports chip evacuation and heat management in high-cycle use
• Web-thinned tapered web reduces thrust force at entry
• Diameter tolerance of plus 0 to minus 0.022 mm supports precision bore work

Compatibility

Designed for use in CNC machining centers, turret lathes, and screw machines with straight-shank toolholding systems accepting an 8.00 mm shank. Primary workpiece materials listed by the manufacturer are steel, cast iron, and hardened materials. Part of OSG Series 5720.

Installation Notes

Installation and use of this tooling should be performed by qualified machinists familiar with carbide tooling handling procedures. Ensure the spindle and coolant system are fully stopped and depressurized before changing tooling. Carbide is brittle — avoid side loading, interrupted cuts beyond tool design limits, or dropping the bit on hard surfaces. Verify toolholder runout and clamping torque per machine manufacturer specifications before initiating a cut cycle.