Balax 11045-010 Thread Forming Tap 5-40 Unc 2B Bottoming Hss

Product Description

The BALAX 11045-010 is a thread forming tap designed to cut 5-40 UNC internal threads in blind hole applications. Unlike cutting taps, thread forming taps displace material rather than remove chips, producing stronger threads with a burnished finish. This tap is manufactured from high-speed steel with a bright uncoated finish and carries a Class 2B thread fit with an H5 thread limit. The bottoming chamfer - approximately 2.5 threads - allows threading close to the bottom of a blind hole. It is installed by machinists, toolroom technicians, and production floor operators working with soft to medium-hardness metals.

This tap is suited for blind hole threading in production and maintenance environments where a standard 5-40 UNC thread form is required. The BXB series designation and H5 thread limit make it appropriate for applications demanding consistent thread tolerance in close-tolerance assemblies. Right-hand thread direction is standard for conventional tapping operations. Its compact overall length of 1.9375 inches fits standard tap handles and machine tool holders used in bench-top and CNC tapping setups.

Key Features

• Thread forming design displaces material for chip-free, stronger threads
• Bottoming chamfer (2.5P) enables threading near the base of blind holes
• H5 thread limit ensures consistent Class 2B fit across production runs
• High-speed steel construction provides durability across a range of workpiece materials
• Bright uncoated finish suitable for use with standard tapping fluids and cutting oils
• No oil grooves - optimized for thread forming rather than chip evacuation

Compatibility

Designed for blind hole threading applications requiring a 5-40 UNC, Class 2B thread form in soft to medium-hardness materials compatible with high-speed steel tooling.

Installation Notes

Thread forming taps require adequate lubrication - use an appropriate tapping fluid or cutting oil for the workpiece material. Ensure the tap is properly aligned perpendicular to the workpiece before engagement to avoid thread distortion or tap breakage. Power down or disengage the tapping spindle before changing taps or clearing the work area. Follow applicable shop safety practices when operating manual or machine tapping equipment.