Tap FANAR GWINTOWNIK M12 DIN-376C L40 LH (6H) HSSE 800

FANAR GWINTOWNIK M12 DIN-376C L40 LH (6H) HSSE 800 is a left-hand threading tap designed for producing internal M12 threads according to DIN-376C. The tool has an overall length of 40 mm and is manufactured from HSSE 800 high-speed steel with cobalt for improved hardness and wear resistance. It is made to a 6H tolerance fit and intended for use in conventional workshop and industrial machining where left-hand threads are required.

Advantages

The HSSE 800 material composition provides enhanced cutting edge strength and extended tool life compared with standard HSS. The DIN-376C geometry ensures consistent thread form and reliable performance when used in appropriate tap holders or hand taps. Left-hand orientation (LH) allows threading operations where reverse rotation or counter-threading is necessary. The compact 40 mm length is suitable for machines and fixtures with limited space while maintaining adequate engagement for accurate thread cutting.

Suitable for

• Cutting internal left-hand M12 threads in steel and alloy steels compatible with HSSE taps
• Workshop tapping operations using machine or hand tapping methods
• Industrial repair and maintenance tasks requiring left-hand threaded fasteners
• Applications with limited axial space where a shorter tap is preferred

Key specifications

• Thread size: M12 (left-hand)
• Standard: DIN-376C
• Overall length: 40 mm
• Tolerance class: 6H
• Material: HSSE 800 (high-speed steel with cobalt)
• Thread type: internal

How to use

Select the correct drill nominal size for the M12 thread and prepare the hole to the appropriate depth. Mount the tap securely in a suitable holder or hand tap wrench, ensuring correct alignment with the hole axis. Use cutting oil or recommended lubricant for the work material to reduce friction and improve chip evacuation. For machine tapping, use the proper feed and speed settings for HSSE tools; for hand tapping, advance steadily and reverse periodically to break chips. After cutting, clean chips from the tap and inspect the thread for conformity to the required tolerance.

Usage recommendations

Use HSSE-rated cutting fluid for enhanced tool life when machining alloy steels; avoid excessive lateral loads and ensure alignment to prevent premature wear or breakage. Store the tap in a dry, protected case to preserve cutting edges and check periodically for wear before reuse.