Osg 8595319 Screw Machine Drill Bit 3.19 Mm Tin Hss

Product Description

The OSG 8595319 is a screw machine length drill bit designed for high-performance metal drilling in production and maintenance environments. It measures 3.19 mm (0.1256 inch) in diameter with an overall length of 50 mm (1.9685 inches) and a flute length of 18 mm. The 130-degree faceted point geometry reduces thrust and walking on entry, making it well suited for harder materials. The high-speed steel body carries a titanium nitride (TiN) coating that extends tool life by increasing surface hardness and reducing friction. Licensed machinists, tool-and-die techs, and industrial maintenance professionals are the primary users.

This bit is built for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format — shorter than jobber length — provides greater rigidity and reduced deflection in drill press, CNC, and turret lathe applications where close-tolerance holes are required. The 5xD flute-to-diameter ratio supports chip evacuation in moderate-depth holes without pecking cycles in most steel applications.

Key Features

• 130-degree faceted point reduces thrust and self-centers on entry into metal workpieces
• TiN coating increases surface hardness and extends tool life versus uncoated HSS
• Web-thinned, tapered web configuration lowers cutting resistance at the chisel edge
• Screw machine length body provides added rigidity over standard jobber-length bits
• Regular spiral, 2-flute design promotes efficient chip evacuation in steel and aluminum
• Straight-cylindrical shank (4.00 mm / 0.1575 inch) fits standard drill chucks and collets

Compatibility

Designed as a replacement or production drill bit for applications requiring a 3.19 mm screw machine length drill in steel, stainless steel, and aluminum workpiece materials. Part of OSG Series 1100.

Installation Notes

Install in a drill press, CNC machining center, or hand drill chuck rated for the shank diameter before beginning any operation. Secure the workpiece firmly before drilling to prevent rotation or movement. Follow shop safety protocols and applicable OSHA machine-guarding standards when operating rotary cutting tools. Inspect the cutting edge for wear or chipping before each use and replace when the bit no longer produces clean, on-tolerance holes.