Mitsubishi MMT16ER175ISO-S VP15TF Threading Insert | MMC Japan
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MMT16ER175ISO-S VP15TF
Mitsubishi Materials | MMT Series External ISO Metric Threading
The Mitsubishi MMT16ER175ISO-S VP15TF is a precision-ground external threading insert specifically designed for 1.75mm pitch ISO metric threads (standard for M12 bolts). Featuring the advanced -S type 3D chipbreaker, this insert excels in chip control and reduction of cutting resistance. Coated with the high-performance VP15TF Miracle PVD coating, it is the ideal industrial solution for threading carbon steel, stainless steel, and high-strength alloys.
Technical Specifications
| ISO Designation | MMT16ER175ISO-S |
|---|---|
| Thread Profile / Angle | ISO Metric 60° (Full Form) |
| Thread Pitch | 1.75 mm |
| Insert Size (IC) | 9.525 mm (3/8") |
| Grade / Coating | VP15TF (Miracle PVD Coated) |
VP15TF Miracle Grade
The VP15TF grade is a micro-grain carbide substrate paired with Mitsubishi’s proprietary Miracle (Al-Ti-N) PVD coating. It provides exceptional adhesion resistance and toughness, preventing the cutting edge from chipping when machining gummy materials like SUS304 or hardened steels. This is a universal grade for indexable threading.
-S Type 3D Chipbreaker
The -S type geometry is a 3D molded chipbreaker that optimizes chip deformation. In CNC threading, managing the "nesting" of chips is critical. This geometry curls and breaks chips effectively even on the 1.75 pitch, ensuring a smooth surface finish and extending the life of your threading tool holder.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Total No. of Passes |
|---|---|---|
| Carbon Steels (S45C) | 100 - 180 m/min | 9 - 14 |
| Stainless Steels (304/316) | 80 - 140 m/min | 11 - 16 |
| Alloy Steels (SCM440) | 90 - 160 m/min | 10 - 15 |
MMTE EXTERNAL TOOLING
This 16ER insert is designed for Mitsubishi MMTE external holders and standard 16mm threading bars with a 3/8" pocket.
Shop MMTE Holders →Metric vs. Inch Cross-Reference
| Feature | Metric (ISO) | Inch (ANSI) |
|---|---|---|
| Insert Designation | 16 ER | 3 ER (3/8" IC) |
| Thread Pitch | 1.75 mm | ~14.5 TPI |