Osg 10177005 Screw Machine Drill Bit 0.177 in Cobalt Hss

Product Description

The OSG 10177005 is a screw machine length drill bit designed for high-performance drilling in steel and alloy steel applications. Built from cobalt high speed steel with a coated finish, this bit resists heat and wear during demanding production drilling. It features a 130-degree drill point angle, a standard point type with R-thinned web, and a regular spiral flute geometry that promotes efficient chip evacuation. At 0.177 inches (wire size 16, 4.50 mm) in diameter with a 2-9/16-inch overall length, this stub-length drill is suited for shop environments where rigidity and accuracy are priorities. It is installed and used by machinists, tool-and-die professionals, and maintenance technicians.

This drill bit is intended for use in screw machine operations, CNC drilling, and general-purpose metalworking where shorter flute length provides added rigidity. Its cobalt high speed steel construction makes it well-suited for drilling steel, alloy steel, and other ferrous materials at elevated cutting speeds. The straight-cylindrical shank provides positive seating in standard drill chucks and collet holders. The screw machine length format fits applications where drill press clearance is limited or where a shorter tool length reduces deflection in precision work.

Key Features

• Cobalt high speed steel construction for enhanced heat and wear resistance in ferrous metal drilling
• 130-degree drill point angle with R-thinned web for improved centering and reduced thrust
• Screw machine (stub) length format at 2-9/16 inches overall for added rigidity and reduced deflection
• Two-flute regular spiral configuration promotes efficient chip removal
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Diameter tolerance of plus 0 to minus 0.018 mm for consistent, accurate hole sizing

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for screw machine and general metalworking applications involving steel and alloy steel workpieces. Fits standard drill chucks and collet systems accepting straight-cylindrical shanks at 0.177 inches diameter.

Installation Notes

This drill bit is installed and used by machinists and metalworking technicians. Ensure the drill press, lathe, or CNC machine is fully powered down and locked out before changing tooling. Secure the straight-cylindrical shank firmly in the chuck or collet to the manufacturer-specified seating depth before operation. Inspect the cutting edges for wear or chipping before each use and replace the bit if damage is observed.