Balax 10282-01T Thread Forming Tap 2-56 Unc Bottoming Hss Tin

Product Description

The BALAX 10282-01T is a bottoming-style thread forming tap designed for cutting 2-56 UNC internal threads in blind hole applications. Thread forming taps displace material rather than cutting chips, producing stronger threads with no swarf to clear from the hole. This tap is manufactured from high-speed steel and finished with a titanium nitride (TiN) coating to reduce friction and extend tool life. It carries an H2 thread limit and a 3B class of fit, making it suitable for close-tolerance fastener applications. Machinists and tool-and-die professionals use this tap in manual and CNC tapping operations on ductile metals.

This tap is intended for blind hole threading in ductile materials where chip evacuation is a concern and thread strength is critical. The bottoming chamfer - 2.5 threads of lead - allows threading to near the bottom of a blind hole, maximizing thread engagement in short-depth applications. It is commonly used in precision assembly, electronics enclosures, and small-fastener work where 2-56 UNC threads are standard.

Key Features

• Thread forming design displaces material rather than cutting, producing stronger threads and eliminating chips
• Bottoming chamfer with 2.5P lead for threading close to the bottom of blind holes
• High-speed steel construction provides toughness for small-diameter tapping operations
• Titanium nitride (TiN) coating reduces friction and increases tool life
• H2 thread limit with 3B class of fit for close-tolerance applications
• Right-hand thread direction; no coolant-through feature

Compatibility

Designed for forming 2-56 UNC right-hand threads in blind holes in ductile metals; fits standard tap holders and chucks accepting a 0.141 inch shank diameter.

Installation Notes

Thread forming taps require a properly sized forming tap drill - consult a forming tap drill chart for the correct hole diameter before use, as the required pilot hole is larger than a standard cut-tap drill. Secure the workpiece and use a calibrated torque-limiting tap handle or tapping attachment to avoid breakage at this small diameter. Apply a suitable tapping fluid rated for the workpiece material to reduce friction and protect the TiN coating. Ensure the tap is aligned perpendicular to the workpiece surface before engagement.