Osg 8595522 Screw Machine Drill Bit 0.2055 in Hss

Product Description

The OSG 8595522 is a screw machine length drill bit designed for high-performance metal cutting in production and general machining applications. It measures 0.2055 inches (Wire Size #5) in diameter and is manufactured from high speed steel with a coated finish for extended tool life. The 120-degree faceted point and web-thinned, tapered web design reduce entry force and improve chip evacuation. At 70 millimeters overall length with a 26-millimeter flute length, this stub-length bit provides added rigidity over jobber-length alternatives. Machinists and tool-room technicians working in light manufacturing, job shops, and CNC environments are the primary users.

This drill bit is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format makes it well-matched to drill presses, CNC machining centers, and turret lathes where a short, stiff tool is preferred to minimize deflection on close-tolerance holes. The straight-cylindrical shank seats directly into standard drill chucks and collet holders without modification. It is a single-piece unit sold individually.

Key Features

• High speed steel construction with coated finish for wear resistance and heat management
• 120-degree faceted drill point reduces walking on entry and suits a wide range of metal workpieces
• Web-thinned, tapered web lowers thrust force and improves chip flow through the spiral flutes
• Screw machine (stub) length provides greater rigidity compared to jobber-length bits of the same diameter
• Right-hand cut with 2 regular spiral flutes in a 5xD flute-to-diameter ratio for efficient chip evacuation
• Diameter tolerance held to +0 to -0.018 mm for consistent hole sizing across production runs

Compatibility

Designed for use with standard drill chucks and collet systems accepting a 6 mm (straight-cylindrical) shank. Suitable for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces per OSG Series 1100 specifications.

Installation Notes

Install and remove drill bits only after the spindle has come to a complete stop and the machine is powered down. Secure the straight shank fully in the chuck or collet to the recommended grip depth before operation. Inspect the cutting edges and coating for wear or chipping before each use, as a damaged cutting edge on high-speed steel tooling increases heat buildup and hole-size variation. Follow shop-standard speeds and feeds for the workpiece material and consult OSG cutting data charts for optimal results with this Series 1100 bit.