Osg 61536 Screw Machine Drill Bit 0.1417 in Hss

Product Description

The OSG 61536 is a screw machine length drill bit designed for high-performance metal drilling in industrial and trade applications. It measures 3.60 mm (0.1417 inches) in diameter with a 130-degree faceted point angle, making it well suited for initiating clean holes in hard and abrasive materials without a center punch. The bit is manufactured from high speed steel with a coated finish and features a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The straight-cylindrical shank accepts standard drill chucks. Installation and use are appropriate for machinists, tool-and-die technicians, and skilled trade professionals working with precision drilling applications.

The OSG 61536 is built for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Its screw machine length body — shorter than jobber length — provides added rigidity and reduced deflection, which is critical when working in drill presses, CNC machining centers, and turret lathes. The 5xD flute-to-diameter ratio and regular spiral flute geometry promote consistent chip clearing across these materials. This bit suits production environments where tight tolerances and repeatable performance are required.

Key Features

• 0.1417 inch (3.60 mm) cutting diameter with a tolerance of +0 to -0.018 mm for precise hole sizing
• 130-degree faceted point angle reduces walking and suits harder workpiece materials
• Web-thinned tapered web lowers cutting resistance and improves chip flow
• High speed steel construction with coated finish for extended tool life on ferrous and non-ferrous materials
• Screw machine length body provides rigidity and reduced deflection versus jobber length bits
• Right-hand cut, two-flute spiral design compatible with standard drill press and CNC setups

Compatibility

Designed for use in standard drill chucks and toolholders accepting a 4.00 mm straight-cylindrical shank. Suitable for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces as specified by the manufacturer for OSG Series 1100.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools and machine tool operation. Ensure the drill chuck is fully tightened and the workpiece is securely fixtured before starting the spindle. No coolant-through capability is present on this bit, so external cutting fluid or lubricant is recommended when drilling ferrous metals to manage heat buildup. Always wear appropriate eye protection and follow applicable machine shop safety procedures when operating drill presses, lathes, or CNC equipment.