Osg 570021811 Screw Machine Drill Bit 7/32 in Carbide

Product Description

The OSG 570021811 is a solid carbide screw machine length drill bit designed for high-performance drilling in ferrous materials. Built to Series 5700 specifications, it features a 180-degree web-thinned point and an EgiAs coating for improved wear resistance and cutting efficiency. The bit measures 7/32 inch (0.2188 inch decimal) in diameter with a straight cylindrical shank of 0.2500 inch diameter. Overall length is 65 millimeters (approximately 2.56 inches). The two-flute spiral configuration with a regular spiral type promotes efficient chip evacuation. Licensed HVAC technicians, machinists, and trade professionals handling precision drilling tasks in steel, alloy steel, and cast iron will find this bit suited to demanding production and maintenance applications.

The OSG 570021811 is intended for screw machine length drilling applications where a compact, rigid bit profile is required. The reduced overall length compared to jobber-length bits increases stiffness and reduces deflection in short-reach setups. Primary target materials include steel, alloy steel, and cast iron, making this bit applicable in mechanical, HVAC equipment fabrication, and general industrial maintenance environments. The 2xD flute-by-diameter ratio supports efficient chip removal during short-depth drilling cycles. It is sold individually and requires no minimum order beyond a single unit.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• 180-degree web-thinned point reduces entry force and improves hole accuracy
• EgiAs coating enhances surface hardness and extends tool life
• Screw machine (stub) length provides increased stiffness and reduced deflection
• Straight cylindrical shank fits standard drill chucks without adapters
• Two-flute regular spiral design promotes efficient chip evacuation

Compatibility

Designed for drilling in steel, alloy steel, and cast iron workpieces. Fits any standard drill chuck or collet accepting a 0.2500-inch straight cylindrical shank. Suitable for CNC machining centers, drill presses, and screw machine setups requiring a 7/32-inch hole diameter.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with cutting tool safety practices. Secure the shank fully in the chuck or collet before operation and verify concentricity to minimize runout. Always power down and lock out the machine before changing tooling. Carbide tooling is brittle — avoid side loading or prying, which can cause chipping or fracture.