Tap FANAR GWINTOWNIK M4 DIN-371C R15 (6HX) HSSE-PM TS 1400

FANAR GWINTOWNIK M4 DIN-371C R15 (6HX) HSSE-PM TS 1400 is a machine tap designed for cutting internal metric threads M4. It follows the DIN 371C profile with an R15 chamfer and 6HX tolerance class. Manufactured from HSSE-PM (high-speed steel with powder metallurgy), the tap provides improved wear resistance and dimensional stability required in production and tooling environments.

Advantages

The HSSE-PM material offers higher hardness and uniform microstructure for longer tool life under intermittent and continuous cutting conditions. The DIN-371C form with an R15 chamfer ensures reliable thread start and consistent chip formation. The 6HX tolerance provides slightly larger thread allowance to facilitate assembly where minor fit clearance is required. The tool is suitable for machine tapping operations, delivering repeatable thread quality when used with appropriate speeds, feeds, and lubrication.

Suitable for

• Precision internal M4 threading in production runs
• Tooling and fixture manufacturing
• Machining of mild steels and general-purpose alloys (where HSSE-PM is appropriate)
• Machine tapping operations with rigid setup

Key specifications

• Thread size: M4
• Thread form: DIN 371C
• Chamfer type: R15
• Tolerance class: 6HX
• Material: HSSE-PM (powder metallurgy high-speed steel)
• Intended use: machine tap for internal threading
• Application environment: production and tooling

How to use

Secure the workpiece firmly in a rigid fixture and ensure the machine spindle is aligned with the hole axis. Pre-drill the correct pilot hole according to thread size recommendations for M4. Use appropriate cutting speed and feed for HSSE-PM taps and the workpiece material, and apply suitable cutting fluid to aid chip evacuation and reduce tool wear. For machine tapping, engage the tap smoothly, avoid excessive axial forces, and use pecking or reversing cycles if required to break chips and prevent tap binding. Inspect threads after tapping for dimensional accuracy and surface finish.

Usage recommendations

Use this tap in machines with minimal runout and good rigidity. Match pre-drill diameter and cutting parameters to the workpiece material. Replace the tap when wear or deformation affects thread quality to maintain consistent results.