Cutting Insert for Thread Turning FANAR 16 IR 1.25 ISO BMA

The Cutting Insert for Thread Turning FANAR 16 IR 1.25 ISO BMA is a precision insert engineered for internal and external thread machining with a 1.25 mm pitch. Designed to produce ISO-standard threads on metal components, this insert fits into compatible turning tool holders used on metalworking lathes for controlled and repeatable thread profiles. The geometry and cutting edge are optimized for forming accurate pitch and consistent thread form in a variety of steels and common alloys.

Advantages

The insert offers predictable thread geometry and dimensional repeatability, reducing the need for secondary adjustments. Its cutting-edge profile minimizes chatter and supports stable cutting conditions during both internal and external threading. Compatibility with standard ISO threading practices simplifies tooling setup and interchangeability in production environments. The design focuses on reliable performance for short- to medium-run production of threaded parts.

Suitable for

• Internal threading operations on lathes with appropriate boring holders
• External threading on turning tools where ISO threads with 1.25 mm pitch are required
• Producing ISO metric threads on steel, stainless steel, and common alloys
• Workshop and light industrial production runs requiring repeatable thread form

Key specifications

• Thread pitch: 1.25 mm
• Intended thread standard: ISO metric
• Application type: internal and external thread turning
• Geometry: thread-forming/turning insert profile compatible with ISO thread cutting
• Material compatibility: steels, stainless steels, common metal alloys

How to use

Mount the insert into a compatible FANAR or matching insert holder designed for 16 IR style threading. Ensure the tool holder and lathe setup provide correct alignment and clearance for internal or external threading. Select cutting speeds, feeds, and depths of cut appropriate to the workpiece material and 1.25 mm pitch; perform trial cuts to verify thread form and pitch accuracy. Inspect thread profile and adjust tool height and lead compensation as needed to achieve the desired dimensional tolerance.

Usage recommendations

Use appropriate cutting fluids for the workpiece material to extend insert life and improve surface finish. For stainless steels, reduce cutting speed and use steady feed rates to avoid built-up edge. Replace the insert when wear or chipping affects thread geometry to maintain consistent ISO-compliant results.