Balax 40125-010 Spiral Flute Tap 3/8-16 Unc Modified Bottoming

Product Description

The BALAX 40125-010 is a spiral flute tap designed for blind hole threading in a wide range of materials. It cuts a 3/8-16 UNC right-hand thread to a 2B class of fit with an H5 thread limit, making it suitable for precision production environments. The tap is manufactured from M42 powdered metal with a bright/uncoated finish and features a 45-degree helix angle that efficiently evacuates chips up and out of the hole during the threading operation. It is installed by machinists and toolroom technicians working on CNC machining centers, drill presses, and tapping fixtures.

This tap is built for blind hole applications where chip clearance is critical. The modified bottoming chamfer allows threading closer to the bottom of a blind hole than a standard plug tap. The BX200 series fast flute style is optimized for use in materials including aluminum, brass, bronze, carbon steel, copper, magnesium, stainless steel, wrought aluminum alloy, and zinc. It is a practical choice for job shops and production floors that need reliable, repeatable thread quality across multiple material types.

Key Features

• 3/8-16 UNC right-hand thread, 2B class of fit with H5 thread limit for consistent tolerance control
• Modified bottoming chamfer for threading close to the bottom of blind holes
• 45-degree helix angle with fast flute style for efficient upward chip evacuation
• M42 powdered metal construction for wear resistance across a broad material range
• Compatible with aluminum, brass, bronze, carbon steel, copper, magnesium, stainless steel, wrought aluminum alloy, and zinc
• Bright/uncoated finish suitable for use with standard cutting fluids

Compatibility

Designed for blind hole threading applications across aluminum, brass, bronze, carbon steel, copper, magnesium, stainless steel, wrought aluminum alloy, and zinc. Part of the BALAX BX200 series.

Installation Notes

This tap is installed by machinists and toolroom technicians. Always power down and lock out any machine tool before loading or changing tooling. Use the appropriate cutting fluid or tapping compound for the workpiece material to extend tool life and protect thread quality. Follow shop standards and manufacturer guidelines for spindle speed and feed rate for the specific material being tapped.