Balax 40067-010 Spiral Flute Tap 10-24 Unc Modified Bottoming

Product Description

The BALAX 40067-010 is a spiral flute tap designed for blind hole threading in a wide range of metals. It features a 10-24 UNC thread profile with a modified bottoming chamfer, allowing threads to be cut close to the bottom of a blind hole. Built from M42 powdered metal with a bright/uncoated finish, this tap runs in Series BX200 with a fast flute style and a 45-degree helix angle. The 45-degree spiral flute evacuates chips up and out of the hole, making it well-suited for materials that produce stringy or continuous chips. Machinists and toolroom technicians install this tap in manual or CNC tapping operations requiring consistent 2B class of fit threads.

This tap is applied in production and job shop environments where blind hole tapping is required across a broad range of workpiece materials. Its H7 thread limit designates it as oversize, which accounts for material spring-back in tougher alloys. Typical install scenarios include tapping pre-drilled blind holes in machined components, fixtures, and fabricated assemblies. The tap covers aluminum, brass, bronze, carbon steel, copper, magnesium, stainless steel, wrought aluminum alloy, and zinc workpiece materials.

Key Features

• Modified bottoming chamfer allows threading close to the bottom of blind holes
• 45-degree helix angle promotes upward chip evacuation, reducing clogging in blind holes
• M42 powdered metal construction provides wear resistance across ferrous and non-ferrous materials
• H7 thread limit with oversize designation compensates for material spring-back
• 2B class of fit meets standard unified inch thread tolerance requirements
• Fast flute style suited for higher-speed tapping operations

Compatibility

Designed for blind hole threading of 10-24 UNC threads in aluminum, brass, bronze, carbon steel, copper, magnesium, stainless steel, wrought aluminum alloy, and zinc. Part of the BALAX BX200 series.

Installation Notes

Install and remove this tap with power off and the spindle fully stopped before making any adjustments. Use appropriate cutting fluid or tapping compound for the workpiece material to extend tool life and achieve a clean thread form. Ensure the pre-drilled hole meets the recommended tap drill diameter for a 10-24 UNC 2B thread before tapping. Inspect the tap for wear or chipping regularly, as a damaged tap can strip threads or break off in the workpiece.