Osg 8665300 Screw Machine Drill Bit 0.1181in Solid Carbide

Product Description

The OSG 8665300 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding materials. Built to Series 5200 specifications, it features a 3.00 mm (0.1181 inch) diameter, a 140-degree split point, and a coated finish to extend tool life under heavy use. The right-hand spiral flute geometry with R-thinned web promotes chip evacuation and reduces entry thrust. At 66.00 mm overall length and a 3xD flute-to-diameter ratio, this bit is optimized for short, rigid setups on CNC machines and manual drill presses. Licensed machinists and metalworking shops are the primary users of this tooling.

This drill bit is rated for use in steel, stainless steel, cast iron, titanium, and titanium alloys. The screw machine length configuration makes it well-suited for high-production environments where rigidity and hole location accuracy are priorities. Coolant-through capability supports through-spindle coolant delivery, which is critical when drilling deep holes in stainless or titanium where heat buildup accelerates tool wear. The straight-cylindrical shank accepts standard drill chucks and collet holders common to most machining centers and lathes.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• 140-degree split point reduces walking and decreases required thrust at entry
• Coated finish extends tool life when drilling steel, stainless steel, cast iron, and titanium alloys
• Coolant-through design supports through-spindle coolant for heat management in deep-hole applications
• R-thinned, tapered web improves chip flow and reduces axial cutting forces
• Screw machine (stub) length provides maximum rigidity in tight setups and short-reach applications

Compatibility

Rated for primary workpiece materials including steel, stainless steel, cast iron, titanium, and titanium alloys. The straight-cylindrical shank fits standard drill chucks and collet systems. Drill bit diameter tolerance is plus 0 to minus 0.014 mm, consistent with precision hole tolerances required in metalworking applications.

Installation Notes

Installation and use of this tooling should be performed by qualified machinists familiar with speeds, feeds, and fixturing requirements for carbide cutting tools. Secure the shank fully in a properly sized chuck or collet before operation and verify runout before beginning a production run. When using coolant-through capability, confirm spindle coolant pressure is within the machine tool manufacturer specifications. Carbide is brittle — avoid side loading or interrupted cuts without confirming the bit is rated for that application.