Osg 8595122 Screw Machine Drill Bit 0.048 in Hss

Product Description

The OSG 8595122 is a screw machine length drill bit designed for high-performance drilling in metalworking applications. With a 0.048 inch (1.22 mm) diameter and a 140-degree faceted point angle, this bit delivers accurate starts and clean entry holes in dense materials. The two-flute spiral design with web thinning reduces thrust and improves chip evacuation. Built from coated high speed steel, it is suited for production drilling where shorter flute length and a rigid, compact profile are required. Licensed machinists, tool and die techs, and production floor operators are the typical installers.

This drill bit is optimized for use in screw machine operations and short-hole drilling on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The 5xD flute-to-diameter ratio and tapered web configuration make it well suited for CNC drilling centers, manual drill presses, and screw machine setups where hole-location accuracy and tool rigidity are priorities. The straight-cylindrical shank with a 3.00 mm (0.118 inch) shank diameter seats securely in standard collets and chucks.

Key Features

• 0.048 inch (1.22 mm) drill diameter with a tolerance of +0 to -0.0006 inches for consistent hole sizing
• 140-degree faceted point angle reduces walking and improves centering on hard materials
• Web-thinned tapered web lowers axial cutting force and improves chip flow
• Coated high speed steel construction extends tool life in steel and stainless steel applications
• Screw machine length (40.00 mm overall) provides added rigidity compared to jobber-length bits
• Right-hand cut, two-flute spiral geometry suitable for a wide range of metallic workpiece materials

Compatibility

Designed as an OEM-style replacement and standard tooling option for screw machine drilling operations on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces, as specified by the manufacturer for the Series 1100 product line.

Installation Notes

Installation should be performed by a qualified machinist or tool operator familiar with cutting tool setup and machine tool safety procedures. Ensure the spindle is fully stopped and the machine is de-energized or in a safe lockout state before changing tooling. Seat the straight-cylindrical shank fully in the collet or chuck and verify runout before initiating a cut. Do not exceed the recommended feed and speed parameters for the workpiece material being drilled.