Osg 61542 Screw Machine Drill Bit 0.1654 in Hss

Product Description

The OSG 61542 is a screw machine length (stub) drill bit designed for high-performance drilling in metal fabrication and general machining applications. Built from high speed steel with a coated finish, it measures 0.1654 inches (4.20 mm) in diameter with an overall length of approximately 2.60 inches (66.00 mm) and a flute length of approximately 0.87 inches (22.00 mm). The 120-degree faceted point and web-thinned, tapered web construction reduce entry force and improve centering accuracy. A right-hand spiral flute geometry handles chip evacuation efficiently across a range of workpiece materials.

This bit is suited for production drilling, screw machine setups, and CNC or manual drill press operations where a shorter, stiffer drill body is preferred over jobber-length bits. The stub length reduces deflection in tight-clearance or high-feed-rate applications. Primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. The straight-cylindrical shank with a 6.00 mm (approximately 0.236 inch) diameter seats securely in standard drill chucks and quick-change toolholders without additional adapters.

Key Features

• High speed steel construction with coated finish for wear resistance and extended tool life
• 120-degree faceted drill point reduces walking and improves hole entry accuracy
• Web-thinned, tapered web lowers thrust requirements and eases penetration into harder materials
• Screw machine (stub) length body minimizes deflection in high-feed and production drilling setups
• Regular spiral flute geometry supports efficient chip evacuation across steel and non-ferrous materials
• Right-hand cut with 2-flute design compatible with standard drill press and CNC spindle operation

Compatibility

Designed as an OSG Series 1100 screw machine length drill bit suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Fits standard chucks and toolholders accepting a straight-cylindrical shank.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with rotating cutting tools. Secure the shank fully in the chuck or toolholder and verify runout before production use. Always power down and lock out the machine spindle before changing tooling. Follow applicable shop safety standards and manufacturer feed-and-speed recommendations for the workpiece material being drilled.