Osg 8608635 Jobber Length Drill Bit 1/4 Inch Xpm

Product Description

The OSG 8608635 is a jobber-length drill bit designed for high-performance drilling in ferrous and difficult-to-machine materials. Built from XPM high-speed steel with a V-coating finish, it features a 130-degree split-point (R-Thinned) tip that self-centers on entry and reduces thrust force. The straight-cylindrical shank measures 8 millimeters in diameter, and the overall length is 75 millimeters with a 31-millimeter flute length. The 2-flute, regular-spiral geometry promotes efficient chip evacuation in both through and blind-hole applications. Licensed machinists, tool-and-die techs, and maintenance professionals working on steel and alloy components are the primary users of this bit.

This drill bit is rated for use in steel, alloy steel, cast iron, and nickel alloys, covering ISO material codes P, K, S, and H. Typical applications include blind-hole drilling, cross-hole operations, pilot drilling, and self-centering entry cuts. The tapered web configuration and R-Thinned point reduce walking on hard surfaces without requiring a center punch. It is sold individually and fits standard drill chucks and CNC tool holders accepting a straight-cylindrical shank.

Key Features

• XPM high-speed steel construction with V-coating for extended tool life in ferrous materials
• 130-degree R-Thinned split point self-centers on contact and lowers required thrust force
• 2-flute regular spiral geometry supports efficient chip evacuation in blind and cross-hole drilling
• Tapered web configuration adds rigidity while maintaining cutting efficiency
• Straight-cylindrical shank compatible with standard drill chucks and CNC tool holders
• No coolant-through requirement — suitable for dry or external coolant setups

Compatibility

Designed for use in steel, alloy steel, cast iron, and nickel alloy workpieces. Suitable for blind-hole, cross-hole, pilot, and self-centering drilling operations per Series 1900 application guidelines.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drill press, lathe, or CNC milling operations. Secure the straight-cylindrical shank fully in the chuck to the correct depth before engaging the spindle. Inspect the cutting edges and coating for wear or chipping before each use — a damaged tip will compromise hole tolerances and can break under load. Follow shop safety protocols and applicable machine guarding requirements when operating rotating tooling.