Osg 61537 Screw Machine Drill Bit 0.1457 in Hss

Product Description

The OSG 61537 is a screw machine length drill bit designed for high-performance metal removal in industrial and machine shop environments. Built from high speed steel with a coated finish, it measures 0.1457 inches (3.70 mm) in diameter with a 130-degree faceted point angle optimized for drilling into steel, stainless steel, aluminum, and aluminum alloys. The two-flute spiral design with a web-thinned, tapered web configuration reduces thrust and improves chip evacuation. This bit is installed by machinists, tool-and-die professionals, and maintenance technicians working on precision drilling applications where stub-length rigidity is required.

The OSG 61537 is suited for screw machine operations, CNC drilling setups, and bench drill applications requiring a short, rigid drill bit. Its straight-cylindrical shank is compatible with standard drill chucks and collet systems. Primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. The 5xD flute-to-diameter ratio provides stability at depth while keeping the tool compact for close-tolerance work.

Key Features

• 0.1457 inch (3.70 mm) diameter with a tight tolerance of +0 to -0.018 mm for precision fitment
• 130-degree faceted point angle reduces walking and improves centering on hard materials
• Web-thinned tapered web lowers cutting thrust and extends tool life
• High speed steel construction with coated finish for wear resistance
• Two-flute regular spiral design promotes efficient chip clearance
• Screw machine (stub) length provides added rigidity over jobber-length bits

Compatibility

Designed for use with standard drill chucks and collet holders accepting a 4.00 mm (approximately 0.157 inch) straight-cylindrical shank. Rated for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces.

Installation Notes

Install and remove drill bits only with the machine powered down and the spindle fully stopped. Secure the straight-cylindrical shank firmly in the chuck or collet before operation to prevent runout. Use appropriate cutting fluid or lubricant when drilling steel or stainless steel to manage heat buildup. Inspect the cutting edges and point before each use and replace the bit if chipping or excessive wear is observed.