16ER2.5ISO TC GM3225 PVD Coated Carbide Threading Insert for 2.5mm ISO Pitch CNC External Threading

The 16ER2.5ISO TC GM3225 is premium PVD-coated carbide external threading insert manufactured by TC for CNC metric outer thread turning. Adopting standard full-profile 60° ISO thread geometry and TC exclusive GM3225 fine grain carbide grade, this insert features excellent toughness, reliable wear and chipping resistance to retain stable cutting performance in continuous and interrupted threading operations.

Specially designed for fixed 2.5mm pitch metric thread machining, it ensures precise thread contour formation, controllable chip evacuation and prolonged service life for mass-production external threading on general CNC lathes and automatic turning equipment.

• GM3225 fine grain carbide substrate with multilayer PVD coating balances high toughness and abrasion resistance, well suited for high-temperature cutting of stainless steel and alloyed metal materials.
• Fixed full 60° ISO thread profile customized exclusively for 2.5mm pitch standard metric external threads to guarantee consistent thread dimensional precision.
• Standard 16ER external insert structure with optimized clearance, easy clamping and stable installation on matching 16ER-series external threading tool holders.
• Precision-ground cutting edge delivers superior thread surface finish and effectively lowers burr generation after machining.
• Reinforced cutting edge inhibits built-up edge accumulation during long-cycle continuous production and extends overall insert service lifespan.

• Carbon steel
• Alloy steel
• Austenitic stainless steel
• Heat-resistant superalloy
• Pre-hardened structural steel

• Standard 2.5mm pitch metric external thread turning
• CNC lathe outer diameter threading
• Semi-finish precision thread machining
• Interrupted-cut external thread production
• Batch mass ISO metric thread processing

Combining TC’s proven GM3225 coated carbide substrate and dedicated 2.5mm fixed-pitch ISO thread geometry, the 16ER2.5ISO maintains steady cutting stability and uniform thread accuracy during steel and stainless steel threading. Its balanced durability extends tool replacement intervals and lifts overall workshop machining efficiency, making it a dependable dedicated threading insert for 2.5mm pitch metric external thread batch production.