Forming Tap M 2.5 DIN-371C (6HX) SR HSSE-PM WGN TiN

Threading small-diameter holes in tough materials often leads to tap breakage, poor thread quality, and costly rework. The Forming Tap M 2.5 DIN-371C (6HX) SR HSSE-PM WGN TiN eliminates these issues by cold-forming threads without producing chips, ensuring clean, precise, and strong threads in a single pass.

Who is it for

This tap is ideal for CNC machinists, tool and die makers, and production engineers who need reliable thread forming in stainless steel, alloy steel, aluminum, and other ductile materials. It is particularly suited for blind holes where chip evacuation is a challenge and for high-volume manufacturing where tool life and process stability are critical.

Main features

• M2.5 metric fine thread with 6HX tolerance class for precise fit.
• DIN 371C standard with reinforced shank and 6HX tolerance for high accuracy.
• Made from HSSE-PM (powder metallurgy high-speed steel with cobalt) for exceptional wear resistance and toughness.
• TiN (titanium nitride) coating reduces friction, prevents galling, and extends tool life.
• Forming tap design (no flutes) displaces material to create threads, resulting in stronger threads with superior surface finish.
• SR (right-hand spiral) geometry aids in chip evacuation in blind holes, though forming taps produce no chips.
• WGN (Werkzeug-Gesellschaft Nürnberg) manufacturer marking ensures quality and traceability.

Specifications

• Thread size: M2.5
• Thread pitch: 0.45 mm (standard fine pitch for M2.5)
• Thread standard: DIN 371C
• Tolerance class: 6HX
• Material: HSSE-PM (powder metallurgy high-speed steel with cobalt)
• Coating: TiN (titanium nitride)
• Type: Forming tap (fluteless)
• Shank: Reinforced (per DIN 371C)
• Cutting direction: Right-hand
• Application: For ductile materials such as stainless steel, aluminum, and alloy steel

Tips

Use a proper lubricant or forming oil to reduce friction and heat. Ensure the pre-drilled hole diameter is correct for forming taps (larger than for cutting taps) to avoid excessive torque. Run at recommended speeds for HSSE-PM with TiN coating, typically lower than cutting taps. For best results, use in a rigid setup with minimal runout.