Tap FANAR GWINTOWNIK M8 DIN-376C R40 (6H) HSSE TiN 800X

FANAR GWINTOWNIK M8 DIN-376C R40 (6H) HSSE TiN 800X is a machine tap designed for producing internal metric threads M8. Manufactured to the DIN 376C profile with R40 shank tolerance and 6H thread fit, this tap is made of high-speed steel with a titanium nitride (TiN) coating to improve wear resistance and extend tool life in demanding tapping operations. It is intended for use in industrial and CNC environments where consistent, accurate M8 threads are required in metallic workpieces.

Advantages

The TiN coating reduces friction and increases surface hardness, helping to resist wear during repetitive tapping cycles. High-speed steel substrate offers toughness and heat resistance suitable for interrupted cuts and medium cutting speeds. The DIN 376C geometry ensures thread profile accuracy, while the R40 shank tolerance provides stable clamping in machine tool holders. Overall, the design balances durability and precision for production and repair tasks.

Suitable for

• Creating internal M8 metric threads in steel, cast iron and non-ferrous metals
• CNC tapping and automated machining operations
• Batch production and maintenance work requiring consistent 6H thread fit
• Applications where increased tool life and reduced galling are desired

Key specifications

• Thread size: M8 (metric)
• Thread profile: DIN 376C
• Shank tolerance: R40
• Thread fit: 6H
• Material: high-speed steel (HSS/HSS-E)
• Coating: titanium nitride (TiN)
• Intended use: machine tap for internal threading

How to use

Secure the tap in an appropriate machine tool holder or tapping head compatible with the R40 shank tolerance. Select suitable cutting parameters (speed and feed) based on workpiece material and tool manufacturer guidance; use cutting fluid or coolant for most metallic materials to reduce heat and improve chip evacuation. Align the tap with the pre-drilled pilot hole of correct diameter and begin tapping under controlled feed; if manual intervention is required, use a tap wrench with steady, axial pressure. Retract the tap periodically on interrupted threads or when chips accumulate, and clear chips from the hole before resuming.

Usage recommendations

For best results, match drill diameter and cutting parameters to the target material, use appropriate coolant for the material being tapped, and replace the tool when wear compromises thread quality. When tapping in stainless steels or difficult alloys, reduce cutting speed and increase lubrication to minimize work hardening and tool wear.