Osg 3330730 Screw Machine Drill Bit 7.30mm Carbide

Product Description

The OSG 3330730 is a solid carbide screw machine length (stub) drill bit designed for precision hole-making in demanding machining applications. Built to Series 5700 specs, it features a 180-degree flat bottom point geometry that produces clean, flat-bottomed holes without the tapered lead typical of standard drill points. The EgiAs multi-layer proprietary coating reduces friction and extends tool life in abrasive or hardened materials. With a 7.30 mm cutting diameter and a compact 75 mm overall length, this bit is well-suited for CNC machining centers, drill presses, and screw machine operations where rigidity and accuracy are critical.

This drill bit is intended for use in metal fabrication, precision machining, and production drilling environments. The stub length body provides increased rigidity compared to jobber-length bits, making it effective in applications where deflection must be minimized and hole location accuracy is tight. It is installed and used by machinists, tool and die makers, and CNC operators working with ferrous and non-ferrous metals, alloys, and similar materials. The right-hand spiral flute design efficiently evacuates chips during through and blind-hole drilling operations.

Key Features

• 180-degree flat bottom point eliminates the center cone, producing flat-bottomed blind holes
• Solid carbide construction provides superior hardness and wear resistance compared to high-speed steel
• EgiAs multi-layer coating reduces heat buildup and extends cutting edge life
• Stub (screw machine) length body increases rigidity and reduces deflection in tight setups
• Regular spiral flute geometry promotes consistent chip evacuation in production drilling
• Straight cylindrical shank fits standard drill chucks and collet systems without modification

Compatibility

Designed as an OEM-style replacement or direct tooling selection for screw machine and CNC drilling applications requiring a 7.30 mm flat bottom carbide drill bit in the OSG Series 5700 range.

Installation Notes

This drill bit is installed and operated by qualified machinists and CNC technicians. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Secure the straight shank firmly in a properly sized collet or drill chuck to the tool holder manufacturer's specified clamping method. Do not use coolant-through setups with this bit, as the coolant-through feature is not supported on this model.