Threading Insert FANAR 16 IR 2.5 ISO BMA — internal threading insert, pitch 2.5 mm

FANAR 16 IR 2.5 ISO BMA is a replaceable internal threading insert designed for producing ISO-profile internal threads with a 2.5 mm pitch. Engineered for use in turning and internal threading toolholders, this insert fits applications in metalworking where consistent ISO-standard internal threads are required. The geometry and cutting edges are optimized for internal thread form accuracy and repeatability in typical lathe and CNC turning operations.

Advantages

The insert provides a standardized ISO thread profile and a fixed 2.5 mm pitch, enabling reliable thread form and dimensional consistency across production batches. Its replaceable design reduces downtime by allowing quick index or replacement without removing the toolholder. The cutting geometry is intended to deliver stable chip control and predictable cutting forces during internal threading, which assists in maintaining surface finish and thread accuracy.

Suitable for

• Internal threading of ISO-profile threads with 2.5 mm pitch
• Lathe and CNC turning operations requiring replaceable inserts
• Machining of steel and common metal alloys where ISO internal threads are specified

Key specifications

• Thread profile: ISO internal thread geometry
• Thread pitch: 2.5 mm
• Insert type: replaceable internal threading insert
• Intended use: turning/internal threading toolholders

How to use

Mount the insert into a compatible internal threading toolholder following the toolholder manufacturer's instructions. Set up workpiece concentricity and correct depth of cut for internal threading operations, then program or set the turning machine to the appropriate feed and speed for the workpiece material. Make trial cuts and measure the thread profile and pitch to confirm correct alignment and thread form before production runs. Replace or index the insert when wear affects thread dimensional accuracy or surface finish.

Usage recommendations

Use suitable cutting parameters and coolant for the specific workpiece material; verify insert seating and clamping in the toolholder before each cycle. Measure thread form after initial passes to adjust depth or tool offsets as needed to achieve ISO tolerance.