Thread tap FANAR M7 NGMM/3 ISO-529 NR1 HSS

FANAR thread tap M7 NGMM/3 ISO-529 NR1 HSS is a high-speed steel tool designed for cutting and repairing internal metric threads in components made of steel and similar materials. Manufactured to ISO-529 standards, this tap features NGMM/3 geometry and an NR1 tolerance class suitable for producing accurate M7 internal threads in both manual and machine tapping operations. The HSS material provides wear resistance and toughness required for general-purpose tapping tasks.

Advantages

The HSS construction ensures good hardness and heat-resistance for prolonged cutting life compared with carbon steel taps. Conformance to ISO-529 guarantees dimensional accuracy and interchangeability for M7 threads. NGMM/3 geometry optimizes chip formation and evacuation for common materials such as steel, reducing the risk of chip clogging. The NR1 tolerance class provides a balance between cutting ease and thread fit precision suitable for typical assembly requirements.

Suitable for

• Cutting new M7 internal threads in steel and similar ferrous materials
• Repairing damaged or worn M7 threads in components
• Manual tapping operations with tap wrenches
• Machine tapping in drilling or milling machines where HSS taps are used

Key specifications

• Thread size: M7 (metric)
• Geometry: NGMM/3
• Standard: ISO-529
• Tolerance class: NR1
• Material: High-speed steel (HSS)
• Application: Internal thread cutting and repair

How to use

Select an appropriate pilot hole size and ensure the workpiece is securely clamped or held. Apply an appropriate cutting fluid for steel to reduce heat and improve chip evacuation. For manual tapping, align the tap perpendicular to the workpiece and turn evenly, reversing slightly to break chips as needed. For machine tapping, use correct spindle speed and feed settings recommended for HSS taps and the workpiece material, and ensure proper lubrication. Inspect the produced thread for correct fit and surface finish after cutting.

Usage recommendations

Use this FANAR HSS M7 tap with compatible cutting fluids and correct pilot drill sizes to extend tool life. For damaged threads, proceed gradually and consider using a thread gauge to verify tolerance. Avoid excessive speeds or feed rates that can cause premature wear or breakage.