Osg 572028117 Screw Machine Drill Bit 9/32 in Carbide

Product Description

The OSG 572028117 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. With a 9/32 inch (0.2813 inch decimal) diameter and a 180-degree drill point angle, this bit delivers flat-bottom entry geometry suited for drilling into steel, alloy steel, and cast iron. The two-flute regular spiral design with web thinning reduces thrust at the cutting tip, improving chip evacuation and hole quality. The EgiAs multi-layer coating extends tool life in abrasive and high-cycle operations. Licensed machinists and tool-room professionals are the primary installers of this bit.

This drill bit is built for screw machine length applications, meaning a compact overall length of 2.9528 inches (75.00 mm) that provides rigidity and reduced runout in close-tolerance setups. It is well suited for CNC machining centers, drill presses, and screw machine operations where depth-to-diameter ratios of approximately 3xD are needed. Primary workpiece materials include steel, alloy steel, and cast iron. The straight cylindrical shank ensures straightforward chuck compatibility in standard toolholding systems. Coolant-through capability makes it compatible with high-speed wet machining cycles where heat management is critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• 180-degree flat drill point angle with web-thinned, tapered web configuration for reduced entry thrust
• EgiAs multi-layer coating for extended tool life in steel and cast iron
• Coolant-through design supports high-speed wet machining cycles
• Regular spiral flute with 3xD flute-to-diameter ratio for efficient chip evacuation
• Diameter tolerance of +0 to -0.022 mm for consistent, close-tolerance hole production

Compatibility

Designed for use on steel, alloy steel, and cast iron workpieces. Fits within the OSG Series 5720 product line and is compatible with standard straight-cylindrical chuck toolholding systems accepting a 9/32 inch shank.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom professionals. Ensure the machine spindle and toolholder are fully stopped and de-energized before inserting or removing the bit. Verify chuck runout and tool stick-out are within acceptable limits for the intended depth before beginning the operation. Coolant-through setups should confirm pressure and flow rate are appropriate for the cutting speed and material being drilled.