Osg 61585 Screw Machine Drill Bit 8.50mm Tin Hss

Product Description

The OSG 61585 is a screw machine length drill bit engineered for high-performance drilling in metalworking and machining applications. Built from vanadium high speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction during cutting. The bit features an 8.50 mm diameter, a 120-degree faceted drill point, and a web-thinned, tapered-web construction that improves chip evacuation and reduces entry thrust. At 87.00 mm overall length with a 37.00 mm flute length, this stubby screw machine format provides rigidity for accurate, straight-entry holes in production drilling environments. Machinists, tool-and-die techs, and CNC operators are the primary users.

The OSG 61585 is suited for drilling steel, stainless steel, aluminum, aluminum alloys, and aluminum silicate workpieces. The screw machine length profile makes it a practical choice for drill presses, CNC machining centers, and turret lathes where shorter tool stickout is required for rigidity and accuracy. The 10.00 mm straight cylindrical shank fits standard collets and drill chucks in that bore size. The regular spiral flute pattern handles chip clearing in a wide range of these materials without requiring coolant-through capability.

Key Features

• TiN coating reduces surface friction and extends cutting edge life compared to uncoated HSS
• 120-degree faceted point provides clean entry on steel and aluminum workpieces
• Web-thinned, tapered-web design lowers thrust requirements and improves chip flow
• Screw machine length format increases rigidity versus jobber-length bits in tight setups
• Right-hand cut, regular spiral flute — compatible with standard spindle rotation
• Diameter tolerance of +0 to -0.022 mm supports consistent hole sizing in production runs

Compatibility

The OSG 61585 is designed for use in drill presses, CNC machining centers, and turret lathes accepting a 10.00 mm straight cylindrical shank. Primary workpiece compatibility per manufacturer data includes steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate materials.

Installation Notes

Installation and tool changes should be performed with the machine powered down and the spindle fully stopped. Secure the straight shank firmly in a properly sized collet or drill chuck to the tool holder specification — a loose fit will cause runout and premature edge wear. Follow shop safety practices and applicable OSHA machine guarding requirements when operating drilling equipment. Do not exceed the recommended feed and speed parameters for the workpiece material to avoid coating damage or tool breakage.