Threading Insert FANAR 22 IR 3.5 ISO BMA — 22IR3.5ISOBMA

FANAR threading insert 22 IR 3.5 ISO BMA is a replaceable internal threading insert designed for producing ISO-standard threads with a 3.5 mm pitch. The insert is intended for use in lathe and turning toolholders for internal thread cutting, delivering consistent thread form and facilitating quick insert changes in both workshop and production environments. The geometry corresponds to ISO profiles to ensure compatibility with standardized thread specifications and predictable cutting behaviour.

Advantages

The insert provides repeatable thread profile accuracy and simplifies tool setup due to its standardized ISO geometry. Its replaceable design reduces downtime when compared to solid tooling, and it supports efficient tool changeovers in multi-shift operations. The insert is suitable for machining a range of internal diameters when paired with the correct toolholder and cutting parameters.

Suitable for

• Internal threading on lathes and turning centers
• Small- to medium-batch production of ISO threads
• Workshops requiring quick insert replacement and standardised thread profiles
• Applications where consistent 3.5 mm pitch threads are required

Key specifications

• Thread pitch: 3.5 mm (ISO thread geometry)
• Application type: internal threading
• Replaceable cutting insert format suitable for toolholders
• Compatibility: designed for standard lathe/turning toolholders configured for this insert style
• Typical use environment: workshop and production settings

How to use

Select a compatible internal threading toolholder configured for the FANAR insert form and securely clamp the insert according to the toolholder manufacturer's instructions. Set the lathe to the correct spindle speed and feed corresponding to the workpiece material and the 3.5 mm thread pitch. Engage the insert to machine the internal thread with appropriate coolant or lubrication as recommended for the material being cut. Monitor cutting forces and inspect thread profile with gauges or measuring tools to confirm conformity to ISO dimensions; replace the insert when wear affects thread quality.

Usage recommendations

Use cutting speeds and feeds matched to the workpiece material and ensure correct insert seating to maintain thread accuracy. Employ suitable coolant or lubricant for improved surface finish and tool life. Verify thread form with calibrated gauges after initial passes and replace the insert at the first sign of wear that degrades thread geometry.