Thread tap FANAR M8 DIN-371B EL (6H) HSSE 800 for cutting metric internal threads

FANAR thread tap M8 DIN-371B EL (6H) HSSE 800 is a precision tool for cutting M8 metric internal threads. Manufactured to DIN-371B dimensions with 6H tolerance and produced from high-speed steel with added cobalt (HSSE), this tap is suitable for both hand and machine tapping operations. Its geometry and material composition are intended to improve wear resistance and maintain cutting performance in general engineering and maintenance work.

Advantages

The HSSE 800 material provides higher red-hardness and increased resistance to abrasive wear compared with standard high-speed steel, extending tool life in intermittent or continuous use. Conformance to DIN-371B dimensional standards and 6H tolerance ensures consistent thread fit and interchangeability. The EL (extra length) style offers additional reach for components with deeper thread requirements, and the tap’s design supports reliable chip evacuation when used with appropriate cutting fluid and technique.

Suitable for

• Cutting M8 metric internal threads in general engineering
• Maintenance and repair operations on machinery and equipment
• Hand or machine tapping in small-batch production
• Applications requiring extended reach for deeper threaded holes

Key specifications

• Thread size: M8 metric
• Standard: DIN-371B (parallel thread-formation tap)
• Tolerance class: 6H
• Material: high-speed steel with cobalt (HSSE)
• Length type: EL (extra length) for deeper reach
• Usage: suitable for hand and machine tapping

How to use

Select the correct drill size for the M8 tap according to DIN recommendations, secure the workpiece, and apply suitable cutting fluid for the material being machined. Start tapping carefully, keeping the tap perpendicular to the hole axis; for hand tapping use a T-handle or wrench, and for machine tapping ensure the spindle speed and feed are appropriate for the tap material and workpiece. Periodically reverse the tap to break chips and clear the flutes, and withdraw the tap slowly after completing the thread to avoid damage.

Lietošana — ieteikumi

For best results, match cutting speed and lubricant to the workpiece material, avoid excessive side forces, and replace the tap when wear affects thread quality. When tapping close to blind depths, ensure sufficient clearance to prevent chip packing; when machine tapping, use rigid fixturing and correct spindle runout control to prolong tool life.