Osg 61541 Screw Machine Drill Bit 0.1614 in Hss Tin

Product Description

The OSG 61541 is a screw machine length (stub length) drill bit designed for high-throughput drilling in metalworking and machining applications. It features a 0.1614-inch (4.10 mm) diameter, a 120-degree faceted drill point, and a titanium nitride (TiN) coating over a high speed steel (HSS) body. The TiN finish increases surface hardness and reduces friction, extending tool life in production environments. A fast spiral flute promotes chip evacuation, and the web-thinned, parallel web construction reduces entry force. The straight-cylindrical shank measures 6.00 mm in diameter and seats securely in standard drill chucks and collet holders. Overall length is approximately 2.60 inches (66.00 mm).

This bit is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format is a common choice in CNC machining centers, drill presses, and turret lathes where rigidity and minimal overhang are required. It is classified as a high-performance grade within the OSG Series 1100, making it appropriate for both production-volume shops and tool room use. Right-hand cut geometry is standard for conventional drill press and CNC spindle operation.

Key Features

• 0.1614-inch (4.10 mm) cutting diameter within the 0.1500 to 0.2000-inch size range
• TiN coating increases wear resistance and reduces built-up edge on ferrous and non-ferrous materials
• 120-degree faceted point for accurate self-centering and reduced walking on entry
• Fast spiral flute with web-thinned parallel web lowers thrust force and improves chip clearance
• Straight-cylindrical shank compatible with standard chucks and collet systems
• High-performance HSS grade rated for steel, stainless steel, and aluminum family materials

Compatibility

Designed for use with standard drill chucks and collet holders accepting a straight-cylindrical shank. Suitable for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces as specified by the manufacturer for the Series 1100 line.

Installation Notes

Installation and use should be performed by qualified machinists or tool and die professionals familiar with cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable limits. Always bring spindle speed and feed rate in line with the workpiece material and machine capabilities before drilling. Do not use coolant-through setups, as this bit does not support coolant-through delivery.