Osg 8595145 Screw Machine Drill Bit 1.45 Mm Tin Hss

Product Description

The OSG 8595145 is a screw machine length drill bit designed for high-performance drilling in metalworking and machining applications. Built from high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction during cutting. The bit measures 1.45 mm in diameter with a 41 mm overall length and features a 140-degree faceted point for fast, accurate penetration with minimal walking. Its web-thinned, tapered web configuration reduces thrust requirements and improves chip evacuation. This bit is sold individually and is suited for use in CNC machining centers, drill presses, and screw machine setups operated by machinists and tool-and-die professionals.

This drill bit is intended for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format — shorter than a jobber bit — provides added rigidity and reduced deflection, making it well-suited for high-speed, high-precision production drilling. The straight-cylindrical shank accepts standard drill chucks and collet-style toolholders commonly found in production machine shop environments.

Key Features

• 1.45 mm cutting diameter with a tolerance of +0 to -0.014 mm for consistent, accurate hole sizing
• 140-degree faceted point reduces thrust and improves self-centering on entry
• TiN coating extends tool life and lowers cutting friction compared to uncoated HSS
• Web-thinned, tapered web construction improves chip flow and reduces cutting resistance
• Screw machine length body adds rigidity and minimizes deflection in short-reach applications
• Right-hand spiral flute design compatible with standard right-hand spindle rotation

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks and collet toolholders accepting a 3.00 mm straight-cylindrical shank across CNC and manual drilling equipment.

Installation Notes

Installation and tool changes should be performed with the machine fully powered down and spindle at a complete stop. Ensure the chuck or collet is properly torqued to the toolholder manufacturer's specification before operation. Machinists should verify spindle speed and feed rate are appropriate for the workpiece material and bit diameter before engaging the cut. Inspect the cutting edge for wear or chipping between uses, as TiN-coated HSS bits should be replaced rather than reground when the coating is compromised.