Kennametal 4130061 Thread Forming Tap 2-56 Unc Bottoming Tin

Product Description

The KENNAMETAL 4130061 is a thread forming tap designed for cold-forming internal threads in a 2-56 UNC configuration. Unlike cutting taps, thread forming taps displace material rather than cutting it, producing stronger threads with no chips to clear. This tap is built from Vanadium High Speed Steel (HSS-E) and coated with Titanium Nitride (TiN) for improved wear resistance and tool life. With a bottoming chamfer of 1.5 to 2 threads, it is suited for threading to the bottom of blind holes. The H2 thread limit ensures close tolerances appropriate for precision fastener applications. Machinists and toolroom professionals install this tap in CNC machining centers, drill presses, and tapping machines.

This tap is intended for blind hole threading in steel workloads, as indicated by its P material application code. The bottoming chamfer allows threads to be formed as close to the bottom of a blind hole as possible, making it well suited for tight-tolerance assemblies where thread depth is critical. The 2-56 UNC thread form is common in small-fastener applications found in instrument manufacturing, electronics enclosures, and precision mechanical assemblies. The TiN coating reduces friction during the forming process, which is especially beneficial when working in tougher steel grades.

Key Features

• Thread forming design displaces material rather than cutting, producing stronger threads with no chip evacuation required
• Bottoming chamfer (1.5 to 2 threads) enables threading to near the bottom of blind holes
• Vanadium High Speed Steel (HSS-E) construction provides toughness and wear resistance
• Titanium Nitride (TiN) coating reduces friction and extends tool life in steel applications
• H2 thread limit delivers close-tolerance threads suitable for precision assemblies
• Right-hand thread direction for standard machining setups

Compatibility

Designed for blind hole thread forming in steel. Rated for P material application code (steel workpiece materials). Suitable for use in CNC tapping centers, drill presses, and hand tapping setups configured for 2-56 UNC right-hand threads.

Installation Notes

Thread forming taps require a proper forming tap drill size rather than a standard tap drill — consult a thread forming drill chart for the correct pilot hole diameter before use. Adequate lubrication or cutting fluid is essential to reduce forming torque and prevent tap breakage, especially in harder steel grades. Ensure the workpiece is securely fixtured and that the tapping spindle is properly aligned to avoid tap deflection. A licensed machinist or toolroom technician should confirm speed and feed parameters before production runs.