Osg 9599035 Screw Machine Drill Bit 0.1378 in Xpm

Product Description

The OSG 9599035 is a screw machine length drill bit designed for high-performance drilling in steel, alloy steel, cast iron, and nickel alloy. It measures 3.50 mm (0.1378 inches) in diameter with an overall length of 52.00 mm (approximately 2.047 inches) and a flute length of 20.00 mm (approximately 0.787 inches). The bit is manufactured from XPM high-speed steel with a coated finish to extend tool life and reduce friction under load. A 130-degree drill point angle and x-thinned web geometry improve penetration and reduce thrust in hard ferrous materials. This bit is installed by machinists, tool and die professionals, and maintenance technicians working with metalworking equipment.

The OSG 9599035 is suited for screw machine and production drilling applications where a compact, stub-length bit is required for rigidity and accuracy. Its 3xD flute-to-diameter ratio and straight-cylindrical shank with a 4.00 mm (0.157 inches) shank diameter make it compatible with standard drill chucks and collet holders on CNC machines, drill presses, and screw machines. Primary workpiece materials include steel, alloy steel, cast iron, and nickel alloy. The regular spiral flute and tapered web configuration support efficient chip evacuation in these materials.

Key Features

• XPM high-speed steel construction with coated finish for extended tool life in ferrous materials
• 130-degree drill point angle optimized for harder workpiece materials including alloy steel and cast iron
• X-thinned web reduces drilling thrust and improves centering on entry
• Screw machine (stub) length provides added rigidity and reduced deflection versus jobber-length bits
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters
• Right-hand cut, regular spiral flute with tapered web for consistent chip flow

Compatibility

Designed for use in steel, alloy steel, cast iron, and nickel alloy workpieces. Part of the OSG Series 1900 screw machine length drill line. Diameter tolerance is +0 to -0.018 mm, placing this bit in the 0.1000 to 0.1500 decimal inch size range for Series 1900.

Installation Notes

Install in a drill press, CNC machining center, or automatic screw machine using a chuck or collet sized for a 4.00 mm straight-cylindrical shank. Ensure the workpiece is securely fixtured and the machine spindle is at a full stop before changing bits. No coolant-through capability is present on this bit, so apply cutting fluid externally when drilling harder alloys to manage heat buildup. Inspect the cutting edges and web condition before each use and replace the bit when point geometry shows wear to maintain dimensional accuracy.