Osg 3334365 Screw Machine Drill Bit 8mm Solid Carbide

Product Description

The OSG 3334365 is a screw machine length drill bit designed for high-performance drilling in ferrous and hard materials. Built from solid carbide and finished with an EgiAs coating, this bit delivers the rigidity and wear resistance required for demanding production and maintenance drilling. It features a 180-degree web-thinned point for accurate self-centering on entry, reducing walking and the need for a center punch. With a 2-flute spiral configuration and a 3xD flute-to-diameter ratio, it efficiently evacuates chips while maintaining cutting stability. Overall length is 2.95 inches, keeping the short, stiff profile that screw machine drills are selected for.

This drill bit is suited for drilling steel, alloy steel, and cast iron in both production shop and maintenance environments. The screw machine length format makes it a common choice for drill press work, CNC machining centers, and turret setups where tool overhang must be minimized. The straight cylindrical shank fits standard drill chucks and collet holders sized for 8 mm shanks. Coolant-through capability allows internal coolant delivery when the holder and machine support it, extending tool life in interrupted cuts or deep-feature drilling.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• EgiAs coating applied to both the body and drill tip for improved surface lubricity
• 180-degree web-thinned point reduces thrust force and improves self-centering
• Coolant-through design compatible with through-spindle coolant systems
• Tapered web configuration maintains core strength along the flute length
• Series 5720 screw machine length format minimizes overhang and deflection

Compatibility

Designed as an OEM-style replacement or direct tooling selection for machine setups requiring an 8 mm straight-shank screw machine length drill in solid carbide. Primary workpiece materials listed by the manufacturer are steel, alloy steel, and cast iron.

Installation Notes

Install into a drill chuck or collet holder rated for an 8 mm straight cylindrical shank, ensuring the shank is fully seated and the holder is properly torqued or tightened before operation. Machining professionals should verify spindle speed and feed rate against the material being drilled, as solid carbide tooling is sensitive to side loading and improper speeds. When using the coolant-through feature, confirm that coolant pressure and flow are within the machine tool manufacturer specifications before engaging. Inspect the drill point and flutes for chipping or wear before each use, particularly after cutting cast iron or hardened steel.