Osg 8691510 Screw Machine Drill Bit 0.5945 in Solid Carbide

Product Description

The OSG 8691510 is a solid carbide screw machine length drill bit designed for high-performance drilling in hard and abrasion-resistant materials. It measures 0.5945 inches (15.10 mm) in diameter with a 140-degree split point geometry and an R-thinned web for reduced thrust and improved centering at entry. The straight-cylindrical shank measures 16.00 mm in diameter and fits standard drill chucks and collet holders. At 145.00 mm overall length with a 76.00 mm flute length, this is a stub-length format built for rigidity in short-reach applications. Licensed machinists and tool-and-die technicians are the primary installers for this bit in production and maintenance environments.

The OSG 8691510 belongs to the Series 6500 and is rated for drilling into steel, alloy steel, cast iron, titanium, and titanium alloy. The 3xD flute-to-diameter ratio and regular spiral geometry support chip evacuation in these demanding materials. Coolant-through capability makes it suited for CNC machining centers and other setups with internal coolant delivery. It is well matched to production drilling operations where tight tolerances and consistent hole quality in ferrous and titanium-family workpieces are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 140-degree drill point angle with R-thinned web reduces entry thrust and improves self-centering
• Coolant-through design supports high-speed CNC applications with internal coolant
• 2-flute regular spiral geometry promotes efficient chip removal
• Straight-cylindrical shank for compatibility with standard chucks and collet systems
• Tapered web configuration maintains core strength across the flute length

Compatibility

Rated for primary workpiece materials including steel, alloy steel, cast iron, titanium, and titanium alloy. Part of the OSG Series 6500 high-performance carbide drill line. Fits drill chucks and collet holders accepting a 16.00 mm straight shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with carbide cutting tools. Before changing or setting tooling, ensure the machine spindle is fully stopped and power is locked out per your facility lockout/tagout procedure. Carbide tooling is brittle and should not be subjected to impact or dropped on hard surfaces. Verify spindle speed and feed rate are appropriate for the workpiece material and cutting diameter before engaging the cut.