Mitsubishi MMT16ER190BSPT-S VP15TF Threading Insert | MMC Japan
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MMT16ER190BSPT-S VP15TF
Mitsubishi Materials | MMT Series External BSPT (Whitworth) | 19 TPI
The Mitsubishi MMT16ER190BSPT-S VP15TF is a precision-engineered external threading insert designed for 19 TPI British Standard Pipe Taper (BSPT) profiles. This 55° Whitworth-based tapered thread is commonly utilized in 1/4" and 3/8" pipe fittings requiring a pressure-tight seal. Featuring the advanced -S type 3D molded chipbreaker, this insert excels in CNC threading by maintaining strict chip control and preventing surface marring. Utilizing the VP15TF Miracle PVD coating, it is the premier choice for threading stainless steel, carbon steel, and alloyed materials with high reliability.
Technical Specifications
| ISO/Metric Designation | MMT16ER190BSPT-S |
|---|---|
| Thread Standard | BSPT (British Standard Pipe Taper) |
| Threads Per Inch (TPI) | 19 TPI |
| Thread Angle | 55° Full Form |
| Grade / Coating | VP15TF (Miracle Al-Ti-N PVD) |
VP15TF Miracle Grade
The VP15TF grade is Mitsubishi's premium universal PVD solution. It combines a high-toughness substrate with a Miracle (Al-Ti-N) coating. This provides the indexable threading insert with extreme heat resistance and anti-welding properties, which is essential for preventing built-up edge (BUE) when internal/external threading gummy materials like stainless steel.
-S Type (3D) Chipbreaker
The -S molded chipbreaker utilizes a 3D rake face to actively curl chips. For 19 TPI profiles, which are relatively fine, this chip control technology ensures that small chips do not get recut, thereby preserving the surface finish and maintaining the integrity of the tapered thread flank for leak-proof connections.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Recommended No. of Passes |
|---|---|---|
| Carbon Steel (S45C) | 100 - 180 m/min | 8 - 14 |
| Stainless Steel (SUS304) | 80 - 140 m/min | 10 - 16 |
| Alloy Steel (SCM440) | 90 - 160 m/min | 9 - 15 |
MMTE EXTERNAL TOOLING SYSTEM
This 16ER insert is fully compatible with Mitsubishi MMTE external holders and standard 16mm threading shanks.
Shop MMTE Holders →Metric vs. Inch Cross-Reference
| Feature | Metric Designation | Inch Designation (ANSI) |
|---|---|---|
| Insert Size | 16 ER | 16ER (3/8" Inscribed Circle) |
| Thread Pitch | 1.337 mm | 19 TPI (BSPT) |