Osg 8688967 Spotting Drill 4mm 140 Pt Solid Carbide

Product Description

The OSG 8688967 is a solid carbide spotting drill designed to create accurate center points and chamfers before through-hole or tapped-hole drilling operations. With a 140-degree point angle, it generates a clean, precise spot that guides follow-up drills without walking, reducing positional error and improving hole quality. The 4 mm cutting diameter and matching 4 mm straight-cylindrical shank make it compatible with standard collet chucks and drill chucks in that size range. The EgiAs coating improves surface hardness and heat resistance, extending tool life in production environments. This tool is suited for machinists, tool-and-die shops, and CNC operators who require consistent, repeatable entry points across metal workpieces.

The OSG 8688967 is intended for general-purpose spotting applications in ferrous and non-ferrous metals, including steel, aluminum, and cast iron. Its 2-flute spiral geometry with a 25-degree helix angle promotes chip evacuation during the spotting pass. With an overall length of 54 mm and a 12 mm flute length, it fits standard toolholders on benchtop drill presses, knee mills, and CNC machining centers. It is a single-ended tool in the OSG Series 5190 lineup, designed for right-hand cutting direction.

Key Features

• 140-degree point angle for accurate spotting and chamfering before drill entry
• Solid carbide construction for rigidity and wear resistance in production use
• EgiAs coating improves heat resistance and extends tool life
• 25-degree helix angle with 2-flute spiral geometry for chip evacuation
• Straight-cylindrical shank fits standard collet and drill chucks
• Right-hand cut, single-ended design for conventional CNC and manual setups

Compatibility

Designed for use with standard 4 mm collet chucks or drill chucks in CNC machining centers, knee mills, and drill presses. Part of OSG Series 5190.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC operators. Secure the shank fully in the collet or chuck and verify runout before starting the spindle. Ensure the machine is powered down and the spindle is fully stopped before tool changes. Follow the machine manufacturer and OSG tool guidelines for appropriate feed rates and spindle speeds for the workpiece material.