Osg HP253-2244 Carbide Screw Machine Drill Bit 5.70mm

Product Description

The OSG HP253-2244 is a solid carbide screw machine length drill bit designed for high-performance drilling in metalworking applications. With a 5.70 mm diameter and a 140-degree point angle, this bit delivers accurate, controlled entry into ferrous metals including steel, alloy steel, and cast iron. The EgiAs coating reduces friction and extends tool life under demanding cycle times. At 66.00 mm overall length with a 28.00 mm flute length, the screw machine geometry keeps the bit rigid and minimizes deflection in short-hole drilling operations. Coolant-through capability supports high-speed machining setups. This bit is sized for machinists, tool-and-die shops, and production drilling environments.

The HP253-2244 is built for production drilling in steel, alloy steel, and cast iron workpieces. The screw machine length format is suited for CNC machining centers, drill presses, and turret lathes where stub-length rigidity is needed. The 3xD flute-to-diameter ratio and R-thinned point type reduce thrust and improve chip evacuation in through-hole and blind-hole applications. The straight-cylindrical shank at 6.00 mm diameter fits standard collets and drill chucks across common machine tool setups.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• EgiAs coating reduces friction and extends tool life in high-cycle drilling
• 140-degree point angle with R-thinned web for reduced thrust and accurate entry
• Coolant-through design supports high-speed and high-feed machining
• Screw machine length geometry minimizes deflection in short-reach drilling
• 2-flute regular spiral configuration promotes efficient chip evacuation

Compatibility

Designed as an OEM-style replacement and production tooling option for machining operations requiring a 5.70 mm solid carbide screw machine drill in steel, alloy steel, and cast iron workpieces. Fits standard straight-bore collets and drill chucks accepting a 6.00 mm shank diameter.

Installation Notes

Installation and tool changes should be performed by qualified machinists following applicable machine tool lockout and energy-isolation procedures. Verify collet or chuck bore matches the 6.00 mm straight-cylindrical shank before seating the tool. Coolant-through setups should be confirmed for proper flow and pressure before initiating a cut. Do not exceed the machine spindle speed and feed rate ratings for solid carbide tooling in the workpiece material being drilled.