Osg 8665315 Solid Carbide Screw Machine Drill Bit 0.124 in

Product Description

The OSG 8665315 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding materials. It measures 0.124 inches (3.15 mm) in diameter with a 140-degree split point and an overall length of approximately 2.91 inches (74 mm). The 2-flute spiral design with R-thinned web reduces thrust and improves chip evacuation. Coolant-through capability supports extended tool life in production environments. This bit is intended for use by machinists and tool room technicians working with precision metal components requiring tight tolerances and consistent hole quality.

The OSG 8665315 is suited for screw machine operations, CNC drilling, and short-hole drilling applications in production or job shop settings. Its compact screw machine length provides added rigidity compared to jobber-length bits, making it appropriate for close-tolerance work. Primary workpiece materials include steel, stainless steel, cast iron, titanium, and titanium alloys. The 3xD flute-to-diameter ratio supports chip clearing in interrupted or continuous cuts across these material groups.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 140-degree point angle reduces entry force and improves self-centering on hard metals
• R-thinned, tapered web lowers axial thrust during drilling
• Coolant-through design supports internal coolant delivery for heat management in production runs
• Right-hand cut, regular spiral flute with straight-cylindrical shank for standard chuck compatibility
• Diameter tolerance of +0 to -0.018 mm for consistent hole sizing

Compatibility

Designed for use on steel, stainless steel, cast iron, titanium, and titanium alloy workpieces. Part of OSG Series 5200, covering drill bit diameters from 0.1000 to 0.1500 inches (0.00 to 3.50 mm range within the series).

Installation Notes

Installation and use should be performed by qualified machinists or tool room personnel familiar with carbide tooling. Secure the straight-cylindrical shank fully in a precision drill chuck or collet before operation and verify runout is within acceptable limits for the application. Carbide bits are brittle — avoid side loads, sudden feed changes, or interrupted cuts without appropriate feed and speed parameters for the workpiece material. Engage coolant-through supply before initiating the cut when using internal coolant capability.