Osg 61597 Screw Machine Drill Bit 0.3819 in Hss

Product Description

The OSG 61597 is a screw machine length drill bit designed for high-performance drilling in metal and non-ferrous materials. Built from high speed steel with a coated finish, it measures 0.3819 inches (9.70 mm) in diameter and features a 120-degree faceted drill point for clean, accurate entry. The shortened screw machine length body improves rigidity and reduces deflection in production drilling environments. A web-thinned, tapered web design lowers thrust requirements and eases penetration. Licensed HVAC techs, machinists, and metalworking professionals working in close-clearance applications rely on this style of bit for consistent, repeatable hole quality.

The OSG 61597 is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Its straight-cylindrical shank seats securely in standard drill chucks and machine spindles, making it a practical choice for CNC machining centers, drill presses, and screw machine setups. The 5xD flute-to-diameter ratio and regular spiral flute geometry provide steady chip evacuation in both through-hole and blind-hole applications across production and maintenance shop environments.

Key Features

• 0.3819 inch (9.70 mm) diameter with diameter tolerance of +0 to -0.022 mm for consistent fit
• 120-degree faceted drill point reduces walking and improves hole entry accuracy
• Web-thinned, tapered web lowers cutting thrust on harder workpiece materials
• High speed steel construction with coated finish for extended tool life
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Right-hand cut, 2-flute spiral geometry supports efficient chip removal

Compatibility

Designed for use with steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Fits standard drill chucks and machine spindles accepting a 10.00 mm (approximately 0.394 inches) straight-cylindrical shank. Part of the OSG Series 1100 high performance drill line.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool operators familiar with rotary cutting tools. Secure the straight-cylindrical shank fully into the chuck or collet before operation, and verify spindle speed is appropriate for the workpiece material and bit diameter. Always wear appropriate eye protection and ensure the workpiece is properly fixtured before drilling. Do not exceed the rated capacity of the machine spindle or chuck.