Tap FANAR M18 DIN-376B (6H) HSSE 800 — machine tap for M18 threads

FANAR machine tap for cutting internal M18 metric threads, manufactured to DIN-376B standard with tolerance 6H. Made from HSSE 800 high-speed steel with cobalt alloying, this tap is intended for use in tapping machines or holders to produce precise internal M18 threads in a variety of metals. The geometry and material selection target durability and consistent thread form in serial production and workshop repair applications requiring repeatable dimensional accuracy.

Advantages

The HSSE 800 material with cobalt provides improved wear resistance and higher red hardness compared with conventional high-speed steel, extending tool life under elevated temperatures. Compliance with DIN-376B and tolerance 6H ensures interchangeability and predictable fit of threaded parts. The machine tap design suits use in powered tapping equipment or rigid holders, delivering stable cutting performance and consistent thread quality across multiple components.

Suitable for

• Producing internal M18 metric threads in steel and non-ferrous metals
• Serial production on tapping machines and CNC machining centers
• Workshop repair and maintenance requiring standardized thread tolerance
• Applications where increased heat resistance and tool life are needed

Key specifications

• Thread size: M18
• Standard: DIN-376B
• Tolerance: 6H
• Material: HSSE 800 (high-speed steel with cobalt)
• Type: machine tap for use in tapping machines or rigid holders

How to use

Mount the tap securely in a compatible machine tap holder or tapping spindle designed for DIN-style machine taps. Select appropriate cutting speed and feed for the workpiece material and ensure correct alignment with the pre-drilled hole sized for M18 tapping. Use suitable cutting fluid for the material being tapped to reduce friction and heat buildup. Retract the tap periodically or use a reverse cycle where applicable to break chips and prevent tap binding. Inspect the first produced thread for dimensional accuracy and surface finish before proceeding with batch production.

Usage recommendations

For best results, use recommended drill size for M18 thread root preparation and choose cutting parameters according to workpiece material; heavier alloys may require lower speeds and higher torque. Maintain stable clamping and proper machine alignment to avoid radial forces on the tap. Replace the tap at signs of wear, such as degraded surface finish or increased cutting forces, to preserve thread tolerances and part interchangeability.