Balax 10745-000 Thread Forming Tap 4-40 Unc 2B H5 Plug Hss

Product Description

The BALAX 10745-000 is a fluteless thread forming tap designed for producing internal threads in ductile metals without cutting or removing material. Rather than cutting a thread, this tap cold-forms the thread profile by displacing material, which produces a stronger thread form and eliminates chips. It is configured as a plug chamfer, appropriate for through-hole applications. Made from high-speed steel with a bright uncoated finish, the 10745-000 carries a 4-40 UNC thread specification at a 2B class of fit with an H5 thread limit. It is installed by machinists and tool-and-die professionals using standard tapping equipment.

This tap is suited for through-hole threading operations in production and maintenance environments where chip-free tapping is required. The plug chamfer with 4 chamfered threads provides a gradual lead-in for alignment during the forming process. The BXP series designation places this tap in a forming-tap product line engineered for threading softer metals and alloys where material flow is adequate to support thread forming rather than thread cutting.

Key Features

• Fluteless thread forming design eliminates chips and produces stronger thread forms
• 4-40 UNC thread size at 2B class of fit with H5 thread limit
• Plug chamfer with 4 chamfered threads for guided entry in through-hole applications
• High-speed steel construction for durability in production tapping operations
• Right-hand thread direction, bright uncoated finish
• Zero oil grooves - designed for use with externally applied cutting or forming fluid

Compatibility

Designed as a replacement or production tap for through-hole threading of 4-40 UNC threads in ductile materials. Compatible with standard tapping chucks and spindles that accept a 0.141 inch shank diameter.

Installation Notes

Thread forming taps require adequate material ductility - verify that the workpiece material is suitable for cold forming before use. Apply a forming lubricant or tapping fluid appropriate for the base material; do not run this tap dry. Use in a rigid tapping setup or tapping head to maintain axial alignment and control feed rate. Inspect the tap for wear or galling regularly, as forming taps are subject to different wear patterns than cutting taps.