Mitsubishi MMT16ER110BSPT-S VP15TF Threading Insert | MMC Japan
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MMT16ER110BSPT-S VP15TF
Mitsubishi Materials | MMT Series External BSPT (Whitworth) | 11 TPI
The Mitsubishi MMT16ER110BSPT-S VP15TF is a precision-ground external threading insert specifically engineered for 11 TPI British Standard Pipe Taper (BSPT) threads. This 55° Whitworth profile insert is the industrial choice for high-pressure pipe fittings and fluid systems. Featuring the advanced -S type 3D molded chipbreaker, it provides superior chip control during CNC threading, curling chips away to protect the tapered surface finish. Coated with VP15TF Miracle PVD, this insert is highly effective for threading stainless steel, carbon steel, and alloyed materials.
Technical Specifications
| ISO/Metric Designation | MMT16ER110BSPT-S |
|---|---|
| Thread Standard | BSPT (Whitworth Pipe Taper) |
| Threads Per Inch (TPI) | 11 TPI |
| Thread Angle | 55° Full Form |
| Grade / Coating | VP15TF (Miracle Al-Ti-N PVD) |
VP15TF Miracle Grade
The VP15TF grade is a micro-grain carbide substrate with a specialized Miracle (Al-Ti-N) PVD coating. It is designed for indexable threading where extreme toughness and heat resistance are required. This grade prevents built-up edge (BUE) and edge chipping, making it ideal for the high pressures involved in cutting 11 TPI BSPT profiles.
-S Type (3D) Chipbreaker
The -S molded chipbreaker is an advanced 3D geometry that ensures optimal chip control. By reducing cutting resistance, it helps maintain the strict tolerances required for tapered threads, ensuring a leak-proof surface finish and reducing vibration in long-reach operations.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Recommended No. of Passes |
|---|---|---|
| Carbon Steel (S45C) | 90 - 160 m/min | 12 - 18 |
| Stainless Steel (SUS304) | 70 - 130 m/min | 14 - 22 |
| Alloy Steel (SCM440) | 80 - 140 m/min | 13 - 20 |
EXTERNAL TOOLING SYSTEM
This 16ER insert is designed for Mitsubishi MMTE external holders. Ensure the correct shim is used for tapered pipe threading.
Shop MMTE Holders →Metric vs. Inch Cross-Reference
| Feature | Metric (ISO Model) | Inch Equivalent (ANSI) |
|---|---|---|
| Insert Size | 16 ER | 16ER (3/8" IC) |
| Thread Pitch | ~2.309 mm | 11 TPI |