Osg HP255-1969 Solid Carbide Jobber Drill Bit 5 Mm

Product Description

The OSG HP255-1969 is a solid carbide jobber-length drill bit engineered for high-performance drilling in steel, alloy steel, and cast iron. It carries a 5 mm diameter with a 140-degree point angle, an R-thinned point for reliable self-centering, and a WD1 coating applied for wear resistance and extended tool life. The overall length measures 82 mm, with a 44 mm flute length and a 6 mm straight-cylindrical shank. Two spiral flutes with a regular spiral configuration clear chips efficiently during through-hole and blind-hole operations. This bit is suited for professional machining environments where precision and repeatability are required.

The HP255-1969 is designed for drilling blind holes, cross holes, and through holes in ferrous workpiece materials including steel, alloy steel, and cast iron. The 5xD flute-to-diameter ratio supports deeper hole applications while maintaining rigidity. Coolant-through capability makes it compatible with CNC machining centers and production drilling setups where internal coolant delivery is available. The straight-cylindrical shank seats in standard drill chucks and collet holders without modification.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• WD1 coating for enhanced tool life in steel and cast iron applications
• 140-degree point angle with R-thinned web for self-centering entry
• Coolant-through design compatible with internal coolant delivery systems
• 5xD flute-by-diameter ratio supports deeper drilling applications
• Right-hand cut, regular spiral flutes for efficient chip evacuation

Compatibility

Designed for use in steel, alloy steel, and cast iron workpieces; compatible with standard drill chucks and collet holders accepting a 6 mm straight-cylindrical shank.

Installation Notes

Installation and tool changes should be performed with the machine powered down and spindle fully stopped. Seat the straight-cylindrical shank fully and evenly in the chuck or collet holder before tightening to the tool manufacturer's holding specifications. Verify coolant-through passages are clear before running internal coolant. Inspect the cutting edge and coating condition before each use; a chipped or worn edge will affect hole tolerance and surface finish.