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Vented Screws, Vacuum Screws

These screws are suitable for use in vacuum chambers.

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.
           Vacuum_1en

Image Hex Socket Head Cap Screws (SUSXM7 / Cleanroom Washing/Cleanroom Packing) Socket Head Cap Screws with Ventilation Hole Socket Head Cap Screws with Ventilation Hole - Chemical Polish Hex Socket Head Cap Screws (with Ventilation Hole / Inch Screws) Socket Head Cap Screws with Ventilation Hole - MoS<sub>2</sub> Shot Socket Head Cap Screws with Ventilation Hole - Silver Plating Hex Socket Head Cap Screw with Captive Washer and Ventilation Hole Hex Socket Head Cap Screw with Captive Washer and Ventilation Hole - Chemical Polish Hex Socket Head Cap Screws with Captive Washer and Ventilation Hole
Part Name Hex Socket Head Cap Screws (SUSXM7 / Cleanroom Washing/Cleanroom Packing) Socket Head Cap Screws with Ventilation Hole Socket Head Cap Screws with Ventilation Hole - Chemical Polish Hex Socket Head Cap Screws (with Ventilation Hole / Inch Screws) Socket Head Cap Screws with Ventilation Hole - MoS2 Shot Socket Head Cap Screws with Ventilation Hole - Silver Plating Hex Socket Head Cap Screw with Captive Washer and Ventilation Hole Hex Socket Head Cap Screw with Captive Washer and Ventilation Hole - Chemical Polish Hex Socket Head Cap Screws with Captive Washer and Ventilation Hole
Part Number SNSS-UCL SVSS SVSS-PC SVSS(INCH) SVSS-MOS SVSS-AG SVSI1S SVSI1S-PC SVSQS
Feature Cleanroom Washing/Cleanroom Packing Provided Standard Low outgas Inch Thread
Socket Head Cap Screws		 Seizing prevention Seizing prevention Integrated Washers
I=1		 Integrated Washers
I=1		 Integrated Washers
I=3
Material SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) Equivalent to SUS304 SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304)
Surface Treatment - - Special Chemical Polishing - Molybdenum Disulfide Shot Treatment Silver plating - Special Chemical Polishing -
Thread Size M2 ～ M6 M2 ～ M12 M3 ～ M12 No.4-40UNC ～ 1/4-20UNC M3 ～ M8 M3 ～ M8 M3 ～ M6 M3 ～ M6 M3 ～ M12
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SNSS-M2.5-UCL SNSS-M2-UCL SNSS-M3-UCL SNSS-M4-UCL SNSS-M5-UCL SNSS-M6-UCL SVSS-M10 SVSS-M12 SVSS-M2 SVSS-M2.5 SVSS-M3 SVSS-M4 SVSS-M5 SVSS-M6 SVSS-M8 SVSS-M10-PC SVSS-M12-PC SVSS-M3-PC SVSS-M4-PC SVSS-M5-PC SVSS-M6-PC SVSS-M8-PC SVSS-#10-24 SVSS-#10-32 SVSS-#4-40 SVSS-#5-40 SVSS-#6-32 SVSS-#8-32 SVSS-1/4-20 SVSS-M3-MOS SVSS-M4-MOS SVSS-M5-MOS SVSS-M6-MOS SVSS-M8-MOS SVSS-M3-AG SVSS-M4-AG SVSS-M5-AG SVSS-M6-AG SVSS-M8-AG SVSI1S-M3 SVSI1S-M4 SVSI1S-M5 SVSI1S-M6 SVSI1S-M3-PC SVSI1S-M4-PC SVSI1S-M5-PC SVSI1S-M6-PC SVSQS-M10 SVSQS-M12 SVSQS-M3 SVSQS-M4 SVSQS-M5 SVSQS-M6 SVSQS-M8
Image Socket Head Cap Captive Screws - Cleanroom Washed & Packaged Washer Integrated Hex Socket Head Cap Screws with Ventilation Hole - High Strength Stainless Steel Hex Socket Head Cap Screws (SUS316L / Cleanroom Washing/Cleanroom Packing) Socket Head Cap Screws with Ventilation Hole - SUS316L Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment Hex Socket Head Cap Screws with Ventilation Hole - High Intensity S.S. Hex Socket Head Cap Screws with Ventilation Hole - High Intensity Stainless Steel Hex Socket Head Cap Screws (Inconel equiv.) with Ventilation Hole Hex Socket Head Cap Screws (Hastelloy C-276 equiv.) with Ventilation Hole
Part Name Socket Head Cap Captive Screws - Cleanroom Washed & Packaged Washer Integrated Hex Socket Head Cap Screws with Ventilation Hole - High Strength Stainless Steel Hex Socket Head Cap Screws (SUS316L / Cleanroom Washing/Cleanroom Packing) Socket Head Cap Screws with Ventilation Hole - SUS316L Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment Hex Socket Head Cap Screws with Ventilation Hole - High Intensity S.S. Hex Socket Head Cap Screws with Ventilation Hole - High Intensity Stainless Steel Hex Socket Head Cap Screws (Inconel equiv.) with Ventilation Hole Hex Socket Head Cap Screws (Hastelloy C-276 equiv.) with Ventilation Hole
Part Number SSC-UCL SVSQLG SNSL-UCL SVSL SVSL-PN SVSX-88 SVSLG SVSI SVSH-C276
Feature Captive/Loss Prevention
Cleanroom Washing/Cleanroom Packing Provided		 High Strength (Tensile Strength Ranking 10.8 Equivalent)
Integrated Washers
I=3		 Cleanroom Washing/Cleanroom Packing Provided CorrosionResistance Seizing prevention High Strength(Strength Class 8.8) High Strength(Equivalent to Strength Class 10.8) Chemical Resistance
Heat Resistance		 Chemical Resistance
Material SUSXM7 (Equivalent to SUS304) SUS316L SUS316L SUS316L SUS316L SUS316L HiMo SUS316L Inconel equiv. Hastelloy equiv.
Surface Treatment - - - - Surface hardening treatment - - - -
Thread Size M3 ～ M8 M3 ～ M6 M3 ～ M6 M3 ～ M12 M3 ～ M8 M3 ～ M6 M3 ～ M6 M3 ～ M8 M3 ～ M8
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SSC-M3-UCL SSC-M4-UCL SSC-M5-UCL SSC-M6-UCL SSC-M8-UCL SVSQLG-M3 SVSQLG-M4 SVSQLG-M5 SVSQLG-M6 SNSL-M3-UCL SNSL-M4-UCL SNSL-M5-UCL SNSL-M6-UCL SVSL-M10 SVSL-M12 SVSL-M3 SVSL-M4 SVSL-M5 SVSL-M6 SVSL-M8 SVSL-M3-PN SVSL-M4-PN SVSL-M5-PN SVSL-M6-PN SVSL-M8-PN SVSX-M3-88 SVSX-M4-88 SVSX-M5-88 SVSX-M6-88 SVSLG-M3 SVSLG-M4 SVSLG-M5 SVSLG-M6 SVSI-M3 SVSI-M4 SVSI-M5 SVSI-M6 SVSI-M8 SVSH-M3-C276 SVSH-M4-C276 SVSH-M5-C276 SVSH-M6-C276 SVSH-M8-C276
Image Hex Socket Head Cap Screws (Hastelloy C-22 equiv.) with Ventilation Hole Molybdenum Hex Socket Head Cap Screws with Ventilation Hole Aluminum Hex Socket Head Cap Screws with Ventilation Hole Hex Socket Head Cap Screws with Ventilation Hole - Titanium Titanium Hex Socket Head Cap Screws with Captive Washers Titanium Hex Socket Head Cap Screws with Captive Washers Hex Socket Low Profile Cap Screws (SUSXM7 / Cleanroom Washing/Cleanroom Packing) Socket Head Cap Screws with Ventilation Hole with Low Profile Hex Socket Head Cap Screws with Special Low Profile (SUSXM7 / Cleanroom Washing/Cleanroom Packing)
Part Name Hex Socket Head Cap Screws (Hastelloy C-22 equiv.) with Ventilation Hole Molybdenum Hex Socket Head Cap Screws with Ventilation Hole Aluminum Hex Socket Head Cap Screws with Ventilation Hole Hex Socket Head Cap Screws with Ventilation Hole - Titanium Titanium Hex Socket Head Cap Screws with Captive Washers Titanium Hex Socket Head Cap Screws with Captive Washers Hex Socket Low Profile Cap Screws (SUSXM7 / Cleanroom Washing/Cleanroom Packing) Socket Head Cap Screws with Ventilation Hole with Low Profile Hex Socket Head Cap Screws with Special Low Profile (SUSXM7 / Cleanroom Washing/Cleanroom Packing)
Part Number SVSH-C22 SVSM SVSA SVST SNSI1T SNSI3T SLHS-UCL SVLS SSHS-UCL
Feature Chemical Resistance Heat Resistance Lightweight Lightweight
Nonmagnetic
Chemical Resistance		 Integrated Washers
I=1		 Integrated Washers
I=3		 Low Profile
Space-saving
Cleanroom Washing/Cleanroom Packing Provided		 Low Profile
Small Space		 Special Low Profile
Space-saving
Cleanroom Washing/Cleanroom Packing Provided
Material Hastelloy equiv. Pure molybdenum A5056 Grade 2 Titanium Grade 2 Titanium Grade 2 Titanium SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304)
Surface Treatment - - - Special Chemical Polishing Special Chemical Polishing Special Chemical Polishing - - -
Thread Size M3 ～ M8 M3 ～ M8 M3 ～ M8 M3 ～ M5 M3 ～ M6 M3 ～ M6 M2 ～ M6 M3 ～ M10 M2 ～ M6
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SVSH-M3-C22 SVSH-M4-C22 SVSH-M5-C22 SVSH-M6-C22 SVSH-M8-C22 SVSM-M3 SVSM-M4 SVSM-M5 SVSM-M6 SVSM-M8 SVSA-M3 SVSA-M4 SVSA-M5 SVSA-M6 SVSA-M8 SVST-M3 SVST-M4 SVST-M5 SNSI1T-M3 SNSI1T-M4 SNSI1T-M5 SNSI1T-M6 SNSI3T-M3 SNSI3T-M4 SNSI3T-M5 SNSI3T-M6 SLHS-M2.5-UCL SLHS-M2-UCL SLHS-M3-UCL SLHS-M4-UCL SLHS-M5-UCL SLHS-M6-UCL SVLS-M10 SVLS-M3 SVLS-M4 SVLS-M5 SVLS-M6 SVLS-M8 SSHS-M2.5-UCL SSHS-M2-UCL SSHS-M3-UCL SSHS-M4-UCL SSHS-M5-UCL SSHS-M6-UCL
Image Socket Head Cap Screws with Ventilation Hole with Special Low Profile Hex Socket Head Cap Screws with Special Low Profile (SUS316L / Cleanroom Washing/Cleanroom Packing) with Ventilation Hole),Hex Socket Head Cap Screw with Special Low Profile (SUS316L with Ventilation Hole),Hex Socket Head Cap Screw with Special Low Profile (Titanium Vented Socket Head Cap Screws with Small Head Vented Socket Head Cap Screws with Ultra Low Small Head Vented Socket Head Cap Screws with Small Head - 316L Stainless Steel Vented Socket Head Cap Screws with Ultra Low Small Head - 316L Stainless Steel Vented Socket Head Cap Screws with Small Head - Titanium
Part Name Socket Head Cap Screws with Ventilation Hole with Special Low Profile Hex Socket Head Cap Screws with Special Low Profile (SUS316L / Cleanroom Washing/Cleanroom Packing) with Ventilation Hole),Hex Socket Head Cap Screw with Special Low Profile (SUS316L with Ventilation Hole),Hex Socket Head Cap Screw with Special Low Profile (Titanium Vented Socket Head Cap Screws with Small Head Vented Socket Head Cap Screws with Ultra Low Small Head Vented Socket Head Cap Screws with Small Head - 316L Stainless Steel Vented Socket Head Cap Screws with Ultra Low Small Head - 316L Stainless Steel Vented Socket Head Cap Screws with Small Head - Titanium
Part Number SVSHS SSHL-UCL SVSHL SVSHT SVSS-SD SVSHS-SD SVSL-SD SVSHL-SD SVST-SD
Feature Special Low Profile
Small Space		 Special Low Profile
Space-saving
Cleanroom Washing/Cleanroom Packing Provided		 Special Low Profile
Small Space		 Lightweight
Nonmagnetic
Chemical Resistance		 Standard
Small Head		 Special Low Profile
Small Head
Space-saving		 Small Head
Corrosion Resistance
Non-magnetic		 Special Low Profile
Small Head
Space-saving
Non-magnetic		 Small Head
Lightweight
Non-magnetic
Chemical Resistance
Lightweight
Material SUSXM7 (Equivalent to SUS304) SUS316L SUS316L Grade 2 Titanium SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUS316L SUS316L Grade 2 Titanium
Surface Treatment - - - Special Chemical Polishing - - - - Special Chemical Polishing
Thread Size M3 ～ M6 M3 ～ M5 M3 ～ M5 M3 ～ M6 M2 ～ M10 M3 ～ M6 M2 ～ M8 M3 ～ M5 M3 ～ M5
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SVSHS-M3 SVSHS-M4 SVSHS-M5 SVSHS-M6 SSHL-M3-UCL SSHL-M4-UCL SSHL-M5-UCL SVSHL-M3 SVSHL-M4 SVSHL-M5 SVSHT-M3 SVSHT-M4 SVSHT-M5 SVSHT-M6 SVSS-M10-SD SVSS-M2.5-SD SVSS-M2-SD SVSS-M3-SD SVSS-M4-SD SVSS-M5-SD SVSS-M6-SD SVSS-M8-SD SVSHS-M3-SD SVSHS-M4-SD SVSHS-M5-SD SVSHS-M6-SD SVSL-M2-SD SVSL-M3-SD SVSL-M4-SD SVSL-M5-SD SVSL-M6-SD SVSL-M8-SD SVSHL-M3-SD SVSHL-M4-SD SVSHL-M5-SD SVST-M3-SD SVST-M4-SD SVST-M5-SD
Image Vented Socket Head Cap Screws with Ultra Low Small Head - Titanium Hexagon Head Bolts (with Ventilation Hole) Hex Socket Countersunk Head Screws with Ventilation Hole Cross Recessed Flat Head 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) Hex Socket Head Cap Screws - Super Black Hex Socket Head Cap Screws - Low Temperature Black Chrome
Part Name Vented Socket Head Cap Screws with Ultra Low Small Head - Titanium Hexagon Head Bolts (with Ventilation Hole) Hex Socket Countersunk Head Screws with Ventilation Hole Cross Recessed Flat Head 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) Hex Socket Head Cap Screws - Super Black Hex Socket Head Cap Screws - Low Temperature Black Chrome
Part Number SVSHT-SD SVHS SVFCS SVFS SVFT SVPS SVPT SNSS-BK SNSS-RY
Feature Special Low Profile
Small Head
Space-saving
Lightweight
Non-magnetic
Chemical Resistance
Lightweight		 Hex head screws Hex Socket
CountersunkHead Screws
Small Space		 Flat Head Machine Screws
Small Space		 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		 Reflection Resistance
Corrosion Resistance		 Chemical Resistance
Reflection Resistance
Seizing Prevention
Material Grade 2 Titanium SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) Grade 2 Titanium SUSXM7 (Equivalent to SUS304) Grade 2 Titanium SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304)
Surface Treatment Special Chemical Polishing - - - Special Chemical Polishing - Special Chemical Polishing Stainless Steel Black Low temperature black chrome treatment
Thread Size M3 ～ M6 M3 ～ M8 M3 ～ M8 M2 ～ M6 M3 ～ M4 M3 ～ M8 M3 ～ M5 M2 ～ M10 M3 ～ M10
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SVSHT-M3-SD SVSHT-M4-SD SVSHT-M5-SD SVSHT-M6-SD SVHS-M3 SVHS-M4 SVHS-M5 SVHS-M6 SVHS-M8 SVFCS-M3 SVFCS-M4 SVFCS-M5 SVFCS-M6 SVFCS-M8 SVFS-M2 SVFS-M2.6 SVFS-M3 SVFS-M4 SVFS-M5 SVFS-M6 SVFT-M3 SVFT-M4 SVPS-M3 SVPS-M4 SVPS-M5 SVPS-M6 SVPS-M8 SVPT-M3 SVPT-M4 SVPT-M5 SNSS-M10-BK SNSS-M2-BK SNSS-M3-BK SNSS-M4-BK SNSS-M5-BK SNSS-M6-BK SNSS-M8-BK SNSS-M10-RY SNSS-M3-RY SNSS-M4-RY SNSS-M5-RY SNSS-M6-RY SNSS-M8-RY
Image Washers with Ventilation Grooves Washers with Ventilation Grooves - Chemical Polish Washers with Ventilation Grooves - Titanium Hex Socket Set Screws (with Ventilation Hole) Hex Posts with Ventilation Hole Clamping Set Screws with Ventilation Hole Clamping Set Screws with Ventilation Hole Cover Caps Cover Caps
Part Name Washers with Ventilation Grooves Washers with Ventilation Grooves - Chemical Polish Washers with Ventilation Grooves - Titanium Hex Socket Set Screws (with Ventilation Hole) Hex Posts with Ventilation Hole Clamping Set Screws with Ventilation Hole Clamping Set Screws with Ventilation Hole Cover Caps Cover Caps
Part Number SWAS-VF SWAS-VF-PC SWAT-VF SVTS SHVAS SCSS-VR SCSS-VF SCAP-AL SCAP-CE
Feature Standard Low outgas Lightweight
Nonmagnetic		 Set Screws Stainless Steel
Single - end Female Screw Type		 For Fixing
Full Ball		 For Fixing
Flat Ball		 Low Outgas
Corrosion Resistance		 Heat Resistance
Chemical Resistance

Electrical Insulation
Material SUS304 SUS304 Grade 2 Titanium SUSXM7 (Equivalent to SUS304) SUS304 SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) A5056 Al2O3 (Alumina 99.5%)
Surface Treatment - Special Chemical Polishing - - - - - - -
Thread Size M2 ～ M12 M3 ～ M12 M3 ～ M5 M3 ～ M8 M3 ～ M8 M5 ～ M10 M5 ～ M10 M5 ～ M16 M5 ～ M16
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SWAS-10-VF SWAS-12-VF SWAS-2.5-VF SWAS-2-VF SWAS-3-VF SWAS-4-VF SWAS-5-VF SWAS-6-VF SWAS-8-VF SWAS-10-VF-PC SWAS-12-VF-PC SWAS-3-VF-PC SWAS-4-VF-PC SWAS-5-VF-PC SWAS-6-VF-PC SWAS-8-VF-PC SWAT-3-VF SWAT-4-VF SWAT-5-VF SVTS-M3 SVTS-M4 SVTS-M5 SVTS-M6 SVTS-M8 SHVAS-M3 SHVAS-M4 SHVAS-M5 SHVAS-M6 SHVAS-M8 SCSS-M10-16-VR SCSS-M10-20-VR SCSS-M10-25-VR SCSS-M10-35-VR SCSS-M5-12-VR SCSS-M5-20-VR SCSS-M5-8-VR SCSS-M6-10-VR SCSS-M6-16-VR SCSS-M6-20-VR SCSS-M6-25-VR SCSS-M8-10-VR SCSS-M8-12-VR SCSS-M8-20-VR SCSS-M8-25-VR SCSS-M8-30-VR SCSS-M10-16-VF SCSS-M10-20-VF SCSS-M10-25-VF SCSS-M10-35-VF SCSS-M5-12-VF SCSS-M5-20-VF SCSS-M5-8-VF SCSS-M6-10-VF SCSS-M6-16-VF SCSS-M6-20-VF SCSS-M6-25-VF SCSS-M8-10-VF SCSS-M8-12-VF SCSS-M8-20-VF SCSS-M8-25-VF SCSS-M8-30-VF SCAP-10-AL SCAP-3-AL SCAP-4-AL SCAP-5-AL SCAP-6-AL SCAP-8-AL SCAP-10-CE SCAP-3-CE SCAP-4-CE SCAP-5-CE SCAP-6-CE SCAP-8-CE
Image Cover Caps - PTFE Socket Head Cap Screws for Cover Caps
Part Name Cover Caps - PTFE Socket Head Cap Screws for Cover Caps
Part Number SCAP-PT SNCPS
Feature Chemical Resistance For Cover Caps
Material PTFE (Polytetrafluoroethylene) SUSXM7 (Equivalent to SUS304)
Surface Treatment - -
Thread Size M5 ～ M16 M3 ～ M10
Operating Temperature (℃) - -
CAD CAD CAD
Specifications Specifications Specifications
List SCAP-10-PT SCAP-3-PT SCAP-4-PT SCAP-5-PT SCAP-6-PT SCAP-8-PT SNCPS-M10 SNCPS-M3 SNCPS-M4 SNCPS-M5 SNCPS-M6 SNCPS-M8

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Vol.7　Screw Tightening Control Methods

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