Thread Tap FANAR M18x1 DIN 374B (6H) HSS-E 800

FANAR thread tap M18x1 DIN 374B (6H) HSS-E 800 is a precision cutting tool designed for producing internal metric threads M18×1 in through and blind holes. Manufactured by FANAR to DIN 374B standard and made from high-speed steel with cobalt (HSS‑E), this tap delivers consistent thread geometry and durability for metalworking tasks on steel and common alloys. The tool is suitable for workshop, maintenance and repair environments where accuracy and tool life are important.

Advantages

The HSS‑E material with cobalt increases heat resistance and wear life compared with conventional high-speed steel, enabling reliable performance under higher cutting temperatures. The DIN 374B geometry combined with a 6H tolerance class ensures accurate internal thread form and fit for standard metric fasteners. The HSS‑E 800 marking identifies the material grade and typical performance level, supporting predictable tool replacement intervals and process planning.

Suitable for

• Cutting internal metric threads M18×1 in through holes
• Cutting internal metric threads M18×1 in blind holes
• Threading steel and common alloy materials in maintenance and repair
• Workshop production where DIN 374B thread form and 6H tolerance are required

Key specifications

• Thread size: M18×1 (metric pitch 1.0 mm)
• Thread standard: DIN 374B
• Tolerance class: 6H (internal thread tolerance)
• Material: HSS‑E (high‑speed steel with cobalt), grade HSS‑E 800
• Application: through and blind hole internal threading

How to use

Select an appropriate drill size for the M18×1 tap and prepare the hole with correct alignment. Secure the workpiece and apply suitable cutting fluid for the material being machined. Start the tap perpendicular to the hole and apply steady feed; for blind holes, withdraw the tap periodically to clear chips. Maintain consistent torque and avoid excessive feed to prevent tap breakage. Inspect the produced thread for correct fit and finish before assembly.

Usage recommendations

Use dedicated cutting fluid for steel and alloys to reduce heat and improve chip evacuation. For production runs, monitor wear and replace the tap when thread quality declines. When working with coated or hardened materials, verify that HSS‑E 800 is appropriate or consider alternative tool materials or coatings.