Vented Screws / Vacuum Screws screw length(mm) :8
They efficiently discharge gas accumulated in screw holes or drilled holes, achieving stability in vacuum levels and high vacuum.
The gas vent holes in NBK's vacuum equipment screws are processed in a way that minimally affects the metal structure, reducing the risk
of brittle fracture during use and the generation of outgassing in vacuum environments.

Selection Conditions
- Select screw length(mm)8
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| Part Name | Vented Socket Head Cap Screws | Vented Socket Head Cap Screws | Vented Socket Head Cap Screws | Vented Socket Head Cap Screws | Vented Socket Head Cap Screws | Vented Socket Head Cap Screws | Vented Socket Head Cap Screws - Chemical Polish | Vented Socket Head Cap Screws - Chemical Polish | Vented Socket Head Cap Screws - Chemical Polish |
| Part Number | SVSS-M2-8 | SVSS-M2.5-8 | SVSS-M3-8 | SVSS-M4-8 | SVSS-M5-8 | SVSS-M6-8 | SVSS-M3-8-PC | SVSS-M4-8-PC | SVSS-M5-8-PC |
| Feature | Standard | Standard | Standard | Standard | Standard | Standard | Low Outgas | Low Outgas | Low Outgas |
| Material | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) |
| Thread Size | M2 | M2.5 | M3 | M4 | M5 | M6 | M3 | M4 | M5 |
| Length | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Operating Temperature (℃) | - | - | - | - | - | - | - | - | - |
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD |
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications |
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| Part Name | Hexagon Head Bolts (with Ventilation Hole) | Hexagon Head Bolts (with Ventilation Hole) | Hex Socket Countersunk Head Screws with Ventilation Hole | Hex Socket Countersunk Head Screws with Ventilation Hole | Hex Socket Countersunk Head Screws with Ventilation Hole | Cross Recessed Flat Head Machine Screws with Ventilation Hole | Cross Recessed Flat Head Machine Screws with Ventilation Hole | Cross Recessed Flat Head Machine Screws with Ventilation Hole | Cross Recessed Flat Head Machine Screws with Ventilation Hole |
| Part Number | SVHS-M3-8 | SVHS-M4-8 | SVFCS-M3-8 | SVFCS-M4-8 | SVFCS-M5-8 | SVFS-M2-8 | SVFS-M2.6-8 | SVFS-M3-8 | SVFS-M4-8 |
| Feature | Hex head screws | Hex head screws | Hex Socket CountersunkHead Screws Small Space |
Hex Socket CountersunkHead Screws Small Space |
Hex Socket CountersunkHead Screws Small Space |
Flat Head Machine Screws Small Space |
Flat Head Machine Screws Small Space |
Flat Head Machine Screws Small Space |
Flat Head Machine Screws Small Space |
| Material | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) |
| Thread Size | M3 | M4 | M3 | M4 | M5 | M2 | M2.6 | M3 | M4 |
| Length | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Operating Temperature (℃) | - | - | - | - | - | - | - | - | - |
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD |
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications |
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| Part Name | Cross Recessed Flat Head Machine Screws with Ventilation Hole | Phillips Cross Recessed Flat Head Titanium Machine Screws (with Ventilation Hole) | Phillips Cross Recessed Flat Head Titanium Machine Screws (with Ventilation Hole) | Phillips Cross Recessed Pan Head Machine Screws with Ventilation Hole | Phillips Cross Recessed Pan Head Titanium Machine Screws (with Ventilation Hole) | Phillips Cross Recessed Pan Head Titanium Machine Screws (with Ventilation Hole) | Phillips Cross Recessed Pan Head Titanium Machine Screws (with Ventilation Hole) | Socket Head Cap Screws with Ventilation Hole - MoS2 Shot | Socket Head Cap Screws with Ventilation Hole - MoS2 Shot |
| Part Number | SVFS-M5-8 | SVFT-M3-8 | SVFT-M4-8 | SVPS-M3-8 | SVPT-M3-8 | SVPT-M4-8 | SVPT-M5-8 | SVSS-M3-8-MOS | SVSS-M4-8-MOS |
| Feature | Flat Head Machine Screws Small Space |
Titanium Phillips Cross Recessed Flat Head Machine Screw Low outgas Nonmagnetic |
Titanium Phillips Cross Recessed Flat Head Machine Screw Low outgas Nonmagnetic |
Pan Head Machine Screws | Titanium Phillips Cross Recessed Pan Head Machine Screw Low outgas Nonmagnetic |
Titanium Phillips Cross Recessed Pan Head Machine Screw Low outgas Nonmagnetic |
Titanium Phillips Cross Recessed Pan Head Machine Screw Low outgas Nonmagnetic |
Seizing prevention | Seizing prevention |
| Material | SUSXM7 (Equivalent to SUS304) | Grade 2 Titanium | Grade 2 Titanium | SUSXM7 (Equivalent to SUS304) | Grade 2 Titanium | Grade 2 Titanium | Grade 2 Titanium | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) |
| Thread Size | M5 | M3 | M4 | M3 | M3 | M4 | M5 | M3 | M4 |
| Length | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Operating Temperature (℃) | - | - | - | - | - | - | - | - | - |
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD |
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications |
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| Part Name | Hex Socket Head Cap Screws - Super Black | Hex Socket Head Cap Screws - Low Temperature Black Chrome | Hex Socket Head Cap Screws - Low Temperature Black Chrome | Hex Socket Head Cap Screws - Low Temperature Black Chrome | Flanged Socket Head Cap Screws - Low Temperature Black Chrome Treatment | Flanged Socket Head Cap Screws - Low Temperature Black Chrome Treatment | High Strength Stainless Steel Socket Head Cap Screws – Low Temperature Black Chrome Treatment | High Strength Stainless Steel Socket Head Cap Screws – Low Temperature Black Chrome Treatment | Socket Head Cap Captive Screws - Low Temperature Black Chrome Treatment |
| Part Number | SNSS-M5-8-BK | SNSS-M3-8-RY | SNSS-M4-8-RY | SNSS-M5-8-RY | SFSS-M4-8-RY | SFSS-M5-8-RY | SNSLG-M3-8-RY | SNSLG-M4-8-RY | SSC-M3-8-RY |
| Feature | Reflection Resistance Corrosion Resistance |
Chemical Resistance Reflection Resistance Seizing Prevention |
Chemical Resistance Reflection Resistance Seizing Prevention |
Chemical Resistance Reflection Resistance Seizing Prevention |
Flanged Chemical Resistance Anti-reflection Seizing Prevention |
Flanged Chemical Resistance Anti-reflection Seizing Prevention |
High Strength (Strength Class 10.8 Equivalent) Non-magnetic Chemical Resistance Anti-reflection Seizing Prevention |
High Strength (Strength Class 10.8 Equivalent) Non-magnetic Chemical Resistance Anti-reflection Seizing Prevention |
Chemical Resistance Anti-reflection Seizing Prevention Captive / Loss Prevention |
| Material | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | SUS316L | SUS316L | SUSXM7 (Equivalent to SUS304) |
| Thread Size | M5 | M3 | M4 | M5 | M4 | M5 | M3 | M4 | M3 |
| Length | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Operating Temperature (℃) | - | - | - | - | - | - | - | - | - |
| CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD | CAD |
| Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications | Specifications |
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| Part Name | Socket Head Cap Captive Screws - Cleanroom Washed & Packaged | Socket Head Cap Captive Screws - Cleanroom Washed & Packaged | |||||||
| Part Number | SSC-M6-8-UCL | SSC-M8-8-UCL | |||||||
| Feature | Captive/ Loss Prevention Cleanroom Washed & Packaged |
Captive/ Loss Prevention Cleanroom Washed & Packaged |
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| Material | SUSXM7 (Equivalent to SUS304) | SUSXM7 (Equivalent to SUS304) | |||||||
| Thread Size | M6 | M8 | |||||||
| Length | 8 | 8 | |||||||
| Operating Temperature (℃) | - | - | |||||||
| CAD | CAD | CAD | |||||||
| Specifications | Specifications | Specifications |
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