Balax 10333-010 Thread Forming Tap 2-56 Unc Bottoming

Product Description

The BALAX 10333-010 is a thread forming tap designed for cutting 2-56 UNC internal threads in blind hole applications. Unlike cutting taps, thread forming taps cold-form the thread profile without producing chips, making them well suited for ductile metals where material flow is achievable. This tap is manufactured from powdered metal high speed steel, which provides a uniform grain structure and consistent hardness throughout the tool. It carries a bright, uncoated finish and is rated for Class 2B and 3B fits with an H3 thread limit. The bottoming chamfer style, with 1.5 chamfered threads, allows threading close to the bottom of a blind hole.

This tap is intended for use in small-diameter blind hole threading operations common in precision machining, electronics hardware, and light mechanical assembly work. The 2-56 UNC thread size is frequently encountered in miniature fastener applications across instrumentation, circuit board standoffs, and small enclosures. It is installed using a tap wrench or machine holder in manual or CNC tapping operations where close-tolerance internal threads are required.

Key Features

• Thread forming (chipless) design produces no chips, reducing clogging risk in blind holes
• Powdered metal high speed steel construction for uniform hardness and wear resistance
• Bottoming chamfer with 1.5 chamfered threads for threading near the bottom of blind holes
• H3 thread limit for Class 2B and 3B fits
• Right-hand thread direction, standard UNC thread form
• Bright uncoated finish compatible with a range of cutting fluids

Compatibility

Designed for blind hole threading of 2-56 UNC threads in ductile materials. Fits standard tap holders sized for a 0.141-inch shank diameter with a 0.110-inch square drive.

Installation Notes

Thread forming taps require a properly sized forming tap drill hole, which is larger than a standard cut tap drill - consult a forming tap drill chart for the correct hole size before use. Secure workpiece and ensure the tap is held perpendicular to the hole to avoid cross-threading and tap breakage. Apply an appropriate cutting or tapping fluid for the workpiece material to reduce forming forces. At this small diameter, use controlled low torque to avoid overloading the tap shank.