Balax 14787-000 Thread Forming Tap 3/4-10 Unc Plug Hss

Product Description

The BALAX 14787-000 is a thread forming tap designed for producing 3/4-10 UNC internal threads without cutting or removing material. Instead of generating chips, it displaces and cold-forms the workpiece material to create strong, clean threads. Built from high-speed steel with a bright uncoated finish, this plug-style tap features a 4-thread chamfer that distributes forming forces across multiple threads during entry. It is sized for through-hole threading applications and suits production and job-shop environments where thread quality and tool life are priorities. Licensed machinists and toolroom technicians are the typical users.

This tap is suited for through-hole threading operations in ductile materials where a chipless process is preferred. The plug chamfer style makes it appropriate for starting and completing a thread in a through-hole in a single pass. With a thread length of 1 inch and an overall length of 4.25 inches, it fits standard tap holders and machines used in general metalworking, automotive, and industrial fabrication. The BXP series designation indicates BALAX product family classification for thread forming taps.

Key Features

• Thread forming design produces no chips, reducing risk of chip contamination in blind or through holes
• 3/4-10 UNC thread size with Class 3B fit and H7 thread limit for controlled tolerance output
• Plug chamfer with 4-thread lead for smooth, progressive thread forming entry
• High-speed steel construction provides toughness across a range of production applications
• Right-hand thread direction, standard for the majority of UNC fastener applications
• Single oil groove aids lubricant distribution during the forming operation

Compatibility

Designed for through-hole threading in ductile metals using standard tap holders and machine spindles that accept a 0.59-inch shank diameter with a 0.442-inch square drive.

Installation Notes

Thread forming taps require an appropriately sized forming tap drill - not a standard cut-tap drill - to achieve the correct minor diameter for Class 3B fit; consult a forming tap drill chart before setup. Ensure the workpiece material is sufficiently ductile, as thread forming is not suitable for brittle or hard materials. Use a recommended tapping fluid or cutting oil compatible with the workpiece material to reduce forming forces and extend tool life. Secure the tap in a rigid holder and align it perpendicular to the work surface to prevent tap breakage or thread distortion.