Osg 8595485 Screw Machine Drill Bit 0.191 in 11 Hss

Product Description

The OSG 8595485 is a screw machine length drill bit designed for high-performance drilling in metalworking and fabrication applications. Built from high speed steel with a coated finish, this bit features a 0.191 inch (4.85 mm) diameter with a 120-degree faceted drill point and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation at entry. The straight-cylindrical shank measures 6.00 mm in diameter, and the overall length is 70.00 mm (approximately 2.76 inches). Two spiral flutes run in a right-hand cut direction. This bit is sold individually and is intended for use by machinists, tool-and-die professionals, and precision fabricators.

The OSG 8595485 is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format provides a shorter, more rigid profile compared to jobber-length bits, making it well-suited for CNC machining centers, turret lathes, screw machines, and drill press operations where reduced deflection and tight tolerances are required. The 5xD flute-to-diameter ratio supports efficient chip clearing in moderate-depth holes. This bit is sized to wire gauge #11 and falls within the 0.1500 to 0.2000 inch diameter range of the Series 1100 line.

Key Features

• 0.191 inch (4.85 mm) cutting diameter with wire gauge #11 sizing
• 120-degree faceted drill point with web-thinned, tapered web for reduced entry thrust
• High speed steel construction with coated finish for improved wear resistance
• Right-hand cut, 2-flute spiral configuration for efficient chip evacuation
• Screw machine length profile provides added rigidity and reduced deflection
• Diameter tolerance of +0 to -0.018 mm for close-tolerance work

Compatibility

Designed as an OEM-style replacement and standard tooling option for screw machine, CNC, and drill press setups requiring a wire gauge #11 screw machine length drill bit. Compatible primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate as specified by the manufacturer.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool operators familiar with proper chuck mounting and feed-rate settings for high speed steel tooling. Ensure the machine spindle is fully stopped and locked out before changing or inspecting the bit. Use appropriate cutting fluid or coolant for steel and stainless steel applications to maintain tool life. Do not exceed the recommended speeds and feeds for the workpiece material and bit diameter.