Thread Tap FANAR M4 DIN 376C R40 (6H) HSSE TiN 800X

The FANAR Thread Tap M4 DIN 376C R40 (6H) HSSE TiN 800X is a solid metric tap designed for cutting internal M4 threads to DIN 376C form. Manufactured from high-speed steel with cobalt (HSSE) and finished with a titanium nitride (TiN) coating, this tap combines wear resistance and toughness for general-purpose threading in steel and other common metals. The R40 point geometry provides efficient chip formation and easier engagement when starting a thread, while the 6H tolerance ensures standard-fit internal threads suitable for mating with metric bolts and screws.

Advantages

The HSSE material offers improved heat resistance and strength compared with standard high-speed steel, extending tool life under intermittent or continuous cutting. The TiN coating reduces friction and wear, improving performance in production and repair tasks. The DIN 376C form and R40 point deliver consistent thread profile and reliable chip evacuation in through holes and blind holes with appropriate pecking or chip control. Overall, the tool is balanced for durability and dimensional accuracy in routine threading operations.

Suitable for

• Cutting internal metric threads M4 in steel, stainless steel, aluminum and non-ferrous metals
• Manual hand tapping and machine tapping including drill-presses and milling machines
• General maintenance, small-series production and prototype work requiring DIN 376C thread form

Key specifications

• Thread size: M4
• Thread form: DIN 376C
• Point geometry: R40 (round chamfer)
• Tolerance class: 6H (internal thread)
• Material: HSSE (high-speed steel with cobalt)
• Surface finish: TiN (titanium nitride) coating
• Tool type: solid thread tap (hand/machine use)

How to use

Select the correct drill size for the M4 tap and prepare the hole with appropriate alignment and coolant. When hand tapping, start slowly and ensure the tap enters perpendicular to the workpiece; apply steady pressure and reverse periodically to break chips. For machine tapping, set appropriate spindle speed and feed for the workpiece material, use rigid fixturing, and employ tapping cycles or pecking for chip control on blind holes. Use cutting fluid compatible with TiN-coated tools to improve lubrication and cooling.

Использование и уход

Store the tap in a protective holder to prevent edges from contacting other tools and inspect before use for wear or damage. Replace the tap when thread quality or dimensional accuracy degrades to maintain consistent results.