Osg 8608476 Screw Machine Drill Bit 3/16 in Xpm

Product Description

The OSG 8608476 is a screw machine length drill bit designed for high-performance metal cutting in demanding shop and field environments. Built from XPM high-speed steel with a coated finish, this bit measures 0.1875 inches (3/16 inch) in diameter with a 130-degree split point and a right-hand spiral flute. The shortened screw machine length provides increased rigidity compared to jobber-length bits, reducing deflection and improving hole accuracy in production drilling setups. It is part of OSG Series 1900 and carries a web-thinned, tapered web configuration for easier penetration at startup. Machinists, tool-and-die technicians, and production drilling operators are the primary users.

This bit is suited for drilling steel, alloy steel, cast iron, and nickel alloy workpieces in CNC machining centers, drill presses, and manual production setups. The screw machine length format makes it a common choice for turret lathes, gang drills, and short-hole applications where rigidity matters more than reach. The 3xD flute-to-diameter ratio and tapered web support chip evacuation in interrupted cuts and through-hole applications across ferrous materials.

Key Features

• XPM high-speed steel construction with coated finish for extended tool life in ferrous materials
• 130-degree drill point angle with R-thinned web for reduced thrust and cleaner entry
• Screw machine (stub) length increases rigidity and reduces deflection versus jobber drills
• Right-hand cut with regular spiral flute geometry supports consistent chip evacuation
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification
• Diameter tolerance of plus 0 to minus 0.018 mm for close-tolerance hole applications

Compatibility

Designed as a standard screw machine length drill bit in the OSG Series 1900 line, compatible with any drill chuck or collet system accepting a 6.00 mm straight-cylindrical shank. Rated for primary workpiece materials including steel, alloy steel, cast iron, and nickel alloy.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Secure the shank fully in the chuck or collet and verify runout before drilling. Always power down and lock out the spindle before changing or inspecting tooling. Follow machine manufacturer guidelines for feed rate and spindle speed appropriate to the workpiece material and bit diameter.