Dimension Drawing
Unit : mm
Related Services
Material/Finish
| SVSHL-SD | |
|---|---|
| Main Body | SUS316L |
| Strength Class | A4 - 70 |
Application
Vacuum devices / Vacuum chambers / FPD production equipment / Semiconductor manufacturing equipment / Electron microscopesCharacteristics
- Special low profile small head screws with ventilation holes.
- The ventilation hole easily releases gas trapped in the screw holes of equipment and machines, and supports vacuum drawing of vacuum devices.
- All head heights are 1.5 mm or less. For space-saving of equipment/devices and applications with limited overhead space.
- Because the head diameter is small, spot facing diameters can be reduced compared to standard hex socket head cap screws with ultra low heads.
- SUS316L is a stainless steel made by adding Mo to SUS304, so it has high pitting resistance and oxidation resistance. Due to its reduced carbon, it also has high intergranular corrosion resistance. This screw also has corrosion resistance against chemical products and seawater environments that matches or exceeds SUS304.
- Non-magnetic.
- Cleanroom wash/cleanroom packing provided.⇒Cleanroom Wash / Cleanroom Packing Service
Usage Example
Effective with vacuum devices and vacuum chambers that require the exhaustion of gas trapped in screw holes.
Precautions for Use
- Since the head bearing surface area is small, the bearing surface pressure increases.
- Using the following formula as a reference, ensure that the bearing surface pressure due to screw tightening does not exceed the permitted surface pressure of the intended fastening material.
Head Diameter and Screw Effective Cross-Sectional Area
| Part Number | Head Diameter (mm) | Screw Effective Cross-Sectional Area (mm2) |
|---|---|---|
| SVSHL-M3-SD | 5 | 5.03 |
| SVSHL-M4-SD | 6 | 8.78 |
| SVSHL-M5-SD | 8 | 14.2 |
