Thread Tap FANAR NARZYNKA M4 HSSE INOX – hand tap for M4 stainless steel threading

FANAR NARZYNKA M4 HSSE INOX is a hand tap engineered for cutting internal metric M4 threads in stainless steel and other corrosion-resistant alloys. Manufactured from HSSE INOX high-speed steel, this tap is intended for applications requiring resistance to heat and wear when machining demanding materials. It is suitable for repair, maintenance and small-batch production where precise, clean threads are required. Use with compatible cutting fluid and correct hand-tapping technique to achieve consistent results and prolong tool life.

Advantages

The HSSE INOX material provides improved toughness and heat resistance compared with conventional HSS, reducing wear when cutting stainless steels and nickel-based alloys. The hand tap geometry is optimized for forming sharp, accurate internal threads with reduced risk of jamming when used with proper lubrication. Its design allows reliable performance in repair and maintenance tasks, delivering repeatable thread quality in small-scale production without the need for specialized machinery.

Suitable for

• Cutting internal M4 metric threads in stainless steel components
• Maintenance and repair of corrosion-resistant alloy assemblies
• Small-batch or prototype threading tasks in metal workshops

Key specifications

• Thread size: M4 metric internal thread
• Material: HSSE INOX high-speed steel optimized for stainless and corrosion-resistant alloys
• Tool type: Hand tap for manual tapping operations
• Intended use: Cutting internal threads in demanding metallic materials

How to use

Secure the workpiece to prevent movement and ensure the tapped hole is correctly predrilled to the recommended diameter for M4 threads. Apply a suitable cutting fluid for stainless steel to the tap and hole. Start the tap straight into the hole and turn it slowly by hand using an appropriate tap wrench, advancing one full turn then reversing a partial turn to break chips. Continue this advance-and-back technique until the thread reaches the required depth, then withdraw the tap carefully while cleaning chips and reapplying lubricant as needed.

Usage recommendations

Use compatible lubricants formulated for stainless steel to reduce friction and prevent galling. Avoid excessive feed or speed when tapping by hand; ensure correct predrill diameter and use steady, controlled motion. Inspect the tap for wear or damage before use and replace it if cutting performance degrades.