16ir / er Threading Inserts
16IR / 16ER Threading Inserts are carbide inserts designed for precision CNC thread turning. 16ER inserts are used for external threads, while 16IR inserts are used for internal threads, covering metric, imperial, UN, NPT, Whitworth and BSPT thread machining. Made from ultra-fine grain carbide with premium coating, these inserts offer wear resistance, anti-chipping performance and stable cutting quality. The three-edge design allows repeated indexing, helping reduce tooling cost and improve production efficiency on CNC lathes and Swiss machines.
16IR / 16ER Threading Inserts for CNC Thread Turning
16IR / 16ER Threading Inserts are carbide threading inserts used for CNC thread turning on lathes and Swiss-type machines. The 16ER insert is designed for external thread machining, while the 16IR insert is used for internal thread machining.
These threading turning inserts are suitable for metric threads, imperial threads, UN unified threads, NPT taper pipe threads, Whitworth threads and BSPT pipe threads. With coated carbide material, stable cutting edges and three usable cutting corners, they help improve thread quality, tool life and machining efficiency.
What Are 16IR and 16ER Threading Inserts?
16IR and 16ER are standard threading insert models used for internal and external thread turning.
16ER Threading Inserts: Used for external thread machining, such as outside threads on shafts, bolts and cylindrical parts.
16IR Threading Inserts: Used for internal thread machining, such as inside threads in holes, nuts, sleeves and pipe fittings.
16ER Threading Inserts:
Used for external thread machining, such as outside threads on shafts, bolts and cylindrical parts.
16IR Threading Inserts:
Used for internal thread machining, such as inside threads in holes, nuts, sleeves and pipe fittings.
Both types are mounted on matching threading tool holders. The correct insert should be selected according to thread direction, thread type, pitch, workpiece material and machining condition.
Key Features of 16IR / 16ER Threading Inserts
Wide Compatibility
16ER inserts are suitable for external threads, and 16IR inserts are suitable for internal threads. They can be used on CNC lathes and Swiss machines for metric, imperial, UN, NPT, Whitworth and BSPT thread processing.
High Performance and Durability
Made from ultra-fine grain carbide with premium coating, these threading inserts offer high hardness, wear resistance and anti-chipping performance. They are designed to maintain stable cutting quality during continuous thread turning.
Cost-Effective Three-Edge Design
Each insert has three usable cutting edges. When one edge wears out, the insert can be indexed to another edge, helping reduce tooling cost, improve insert utilization and support efficient batch production.
Stable Thread Quality
The sharp cutting edge and accurate tip radius help form clean thread profiles, reduce burrs and improve thread surface finish. This is important for precision internal and external thread machining.
Easy Installation and Replacement
The insert structure is designed for quick mounting and replacement on compatible threading tool holders, helping reduce machine downtime and improve production efficiency.
Thread Types Available
16IR / 16ER Threading Inserts can be selected for different thread standards, including:
ISO metric threads UN unified threads NPT taper pipe threads Whitworth threads BSPT pipe threads General 60° threads General 55° threads Internal threads External threads
Whitworth threads
BSPT pipe threads
General 60° threads
General 55° threads
Internal threads
External threads
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