Osg 8595349 Screw Machine Drill Bit 0.1374 in Hss

Product Description

The OSG 8595349 is a screw machine length drill bit designed for high-performance drilling in metal fabrication and machining applications. Built from high speed steel (HSS) with a coated finish, this bit features a 130-degree faceted point angle and a web-thinned, tapered web configuration that reduces entry force and improves centering accuracy. At 0.1374 inches (3.49 mm) in diameter, it is sized for precision work in ferrous and non-ferrous materials. The straight-cylindrical shank and regular spiral flute geometry make it compatible with standard drill chucks and machine spindles. It is part of the OSG Series 1100 lineup and is installed by machinists, toolmakers, and trade professionals working in production or maintenance environments.

This drill bit is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format — shorter than a jobber drill — provides increased rigidity and reduced deflection, making it well-suited for drill press, CNC machining center, and turret lathe applications where stub-length tooling is preferred. The 5xD flute-to-diameter ratio supports effective chip evacuation in moderate-depth holes. This bit is packaged and sold individually.

Key Features

• High speed steel construction with coated finish for extended tool life in steel and aluminum
• 130-degree faceted point angle for self-centering entry and reduced walking on harder materials
• Web-thinned tapered web reduces thrust requirements and improves chip splitting
• Screw machine (stub) length provides added rigidity and reduced deflection versus jobber-length bits
• Right-hand cut, regular spiral flute with straight-cylindrical shank fits standard chucks and collets
• No coolant-through design — suitable for conventional flood coolant or dry drilling setups

Compatibility

Designed for use in drill presses, CNC machining centers, and turret lathes accepting a 4.00 mm (straight-cylindrical) shank. Compatible primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. Part of the OSG Series 1100 screw machine length drill program covering the 0.1000 to 0.1500 decimal inch size range.

Installation Notes

This bit is installed by machinists or maintenance technicians using a standard drill chuck or collet system. Ensure the machine spindle is fully stopped and the workpiece is securely fixtured before bit installation or change-out. Follow shop safety protocols and applicable OSHA machining guidelines when operating rotating tooling. Avoid applying side-load pressure to the shank, as straight-cylindrical shanks are designed for axial cutting forces only.