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Vented Screws / Vacuum Screws characteristics/function :Non-magnetic

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

Selection Conditions
  • Select characteristics/functionNon-magnetic
Image Hex Socket Head Cap Screws with Ventilation Hole - High Intensity Stainless Steel Vented High Strength Stainless Steel Socket Head Cap Screws – Specialized Chemical Polishing Hex Socket Head Cap Screws with Ventilation Hole - High Intensity S.S. Hex Socket Head Cap Screws with Captive Washers and Ventilation Hole - High Strength Stainless Steel Hex Socket Head Cap Screws with Ventilation Hole - Titanium Washers with Ventilation Grooves - Titanium Vented Socket Head Cap Screws with Ultra Low Profile - 316L Stainless Steel Vented Socket Head Cap Screws with Ultra Low Profile - Titanium Vented Socket Head Cap Screws with Small Head - 316L Stainless Steel
Part Name Hex Socket Head Cap Screws with Ventilation Hole - High Intensity Stainless Steel Vented High Strength Stainless Steel Socket Head Cap Screws – Specialized Chemical Polishing Hex Socket Head Cap Screws with Ventilation Hole - High Intensity S.S. Hex Socket Head Cap Screws with Captive Washers and Ventilation Hole - High Strength Stainless Steel Hex Socket Head Cap Screws with Ventilation Hole - Titanium Washers with Ventilation Grooves - Titanium Vented Socket Head Cap Screws with Ultra Low Profile - 316L Stainless Steel Vented Socket Head Cap Screws with Ultra Low Profile - Titanium Vented Socket Head Cap Screws with Small Head - 316L Stainless Steel
Part Number SVSLG SVSLG-PC SVSX-88 SVSQLG SVST SWAT-VF SVSHL SVSHT SVSL-SD
Feature High Strength(Equivalent to Strength Class 10.8) High Strength (Strength Class 10.8 Equivalent) High Strength(Strength Class 8.8) High Strength (Strength Class 10.8 Equivalent)
Captive Washers
I=3		 Lightweight
Nonmagnetic
Chemical Resistance		 Lightweight
Nonmagnetic		 Space-Saving
Ultra Low Profile		 Lightweight
Sapce-Saving
Ultra Low Profile
Nonmagnetic
Chemical Resistance		 Small Head
Corrosion Resistance
Non-magnetic
Material SUS316L SUS316L SUS316L HiMo SUS316L Grade 2 Titanium Grade 2 Titanium SUS316L Grade 2 Titanium SUS316L
Surface Treatment - Special Chemical Polishing - - Special Chemical Polishing - - Special Chemical Polishing -
Thread Size M3 ～ M6 M3 ～ M6 M3 ～ M6 M3 ～ M6 M3 ～ M5 M3 ～ M5 M3 ～ M5 M3 ～ M6 M2 ～ M8
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SVSLG-M3 SVSLG-M4 SVSLG-M5 SVSLG-M6 SVSLG-M3-PC SVSLG-M4-PC SVSLG-M5-PC SVSLG-M6-PC SVSX-M3-88 SVSX-M4-88 SVSX-M5-88 SVSX-M6-88 SVSQLG-M3 SVSQLG-M4 SVSQLG-M5 SVSQLG-M6 SVST-M3 SVST-M4 SVST-M5 SWAT-3-VF SWAT-4-VF SWAT-5-VF SVSHL-M3 SVSHL-M4 SVSHL-M5 SVSHT-M3 SVSHT-M4 SVSHT-M5 SVSHT-M6 SVSL-M2-SD SVSL-M3-SD SVSL-M4-SD SVSL-M5-SD SVSL-M6-SD SVSL-M8-SD
Image Vented Socket Head Cap Screws with Small Head - Titanium Vented Socket Head Cap Screws with Ultra Low Profile & Small Head - 316L Stainless Steel Vented Socket Head Cap Screws with Ultra Low Profile & Small Head - Titanium Phillips Cross Recessed Flat Head Titanium Machine Screws (with Ventilation Hole) Phillips Cross Recessed Pan Head Titanium Machine Screws (with Ventilation Hole) Socket Head Cap Screws - 316L Stainless Steel - Specialized Chemical Polishing High Strength Stainless Steel Socket Head Cap Screws - Specialized Chemical Polishing High Strength Stainless Steel Socket Head Cap Screws – Low Temperature Black Chrome Treatment Titanium Hex Socket Head Cap Screws with Captive Washers
Part Name Vented Socket Head Cap Screws with Small Head - Titanium Vented Socket Head Cap Screws with Ultra Low Profile & Small Head - 316L Stainless Steel Vented Socket Head Cap Screws with Ultra Low Profile & Small Head - Titanium Phillips Cross Recessed Flat Head Titanium Machine Screws (with Ventilation Hole) Phillips Cross Recessed Pan Head Titanium Machine Screws (with Ventilation Hole) Socket Head Cap Screws - 316L Stainless Steel - Specialized Chemical Polishing High Strength Stainless Steel Socket Head Cap Screws - Specialized Chemical Polishing High Strength Stainless Steel Socket Head Cap Screws – Low Temperature Black Chrome Treatment Titanium Hex Socket Head Cap Screws with Captive Washers
Part Number SVST-SD SVSHL-SD SVSHT-SD SVFT SVPT SNSL-PC SNSLG-PC SNSLG-RY SNSI1T
Feature Small Head
Lightweight
Non-magnetic
Chemical Resistance
Lightweight		 Special Low Profile
Small Head
Space-saving
Non-magnetic		 Special Low Profile
Small Head
Space-saving
Lightweight
Non-magnetic
Chemical Resistance
Lightweight		 Titanium Phillips Cross Recessed Flat Head Machine Screw
Low outgas
Nonmagnetic		 Titanium Phillips Cross Recessed Pan Head Machine Screw
Low outgas
Nonmagnetic		 Heat Resistance
Corrosion Resistance
Non-magnetic
Low Outgas		 High Strength (Strength Class 10.8 Equivalent)
Low Outgas
Non-magnetic 		High Strength (Strength Class 10.8 Equivalent)
Non-magnetic
Chemical Resistance
Anti-reflection
Seizing Prevention		 Captive Washers
I=1
Material Grade 2 Titanium SUS316L Grade 2 Titanium Grade 2 Titanium Grade 2 Titanium SUS316L SUS316L SUS316L Grade 2 Titanium
Surface Treatment Special Chemical Polishing - Special Chemical Polishing Special Chemical Polishing Special Chemical Polishing Special Chemical Polishing Special Chemical Polishing Low temperature black chrome treatment Special Chemical Polishing
Thread Size M3 ～ M5 M3 ～ M5 M3 ～ M6 M3 ～ M4 M3 ～ M5 M3 ～ M8 M3 ～ M6 M3 ～ M6 M3 ～ M6
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SVST-M3-SD SVST-M4-SD SVST-M5-SD SVSHL-M3-SD SVSHL-M4-SD SVSHL-M5-SD SVSHT-M3-SD SVSHT-M4-SD SVSHT-M5-SD SVSHT-M6-SD SVFT-M3 SVFT-M4 SVPT-M3 SVPT-M4 SVPT-M5 SNSL-M3-PC SNSL-M4-PC SNSL-M5-PC SNSL-M6-PC SNSL-M8-PC SNSLG-M3-PC SNSLG-M4-PC SNSLG-M5-PC SNSLG-M6-PC SNSLG-M3-RY SNSLG-M4-RY SNSLG-M5-RY SNSLG-M6-RY SNSI1T-M3 SNSI1T-M4 SNSI1T-M5 SNSI1T-M6
Image Titanium Hex Socket Head Cap Screws with Captive Washers Hex Socket Head Cap Screws - 316L Stainless Steel ｰ Cleanroom Washed & Packaged High Strength Stainless Steel Socket Head Cap Screws - Cleanroom Washed & Packaged Socket Head Cap Screws with Ultra Low Profile - 316L Stainless Steel - Cleanroom Washed & Packaged
Part Name Titanium Hex Socket Head Cap Screws with Captive Washers Hex Socket Head Cap Screws - 316L Stainless Steel ｰ Cleanroom Washed & Packaged High Strength Stainless Steel Socket Head Cap Screws - Cleanroom Washed & Packaged Socket Head Cap Screws with Ultra Low Profile - 316L Stainless Steel - Cleanroom Washed & Packaged
Part Number SNSI3T SNSL-UCL SNSLG-UCL SSHL-UCL
Feature Captive Washers
I=3		 Cleanroom Washed
& Packaged		 High Strength
(Strength Class 10.8 Equiv.)
Heat Resistance
Corrosion Resistance
Non-magnetic
Cleanroom Washed
& Packaged		 Space-Saving
Ultra Low Profile
Cleanroom Washed
& Packaged
Material Grade 2 Titanium SUS316L SUS316L SUS316L
Surface Treatment Special Chemical Polishing - - -
Thread Size M3 ～ M6 M3 ～ M6 M3 ～ M6 M3 ～ M5
Operating Temperature (℃) - - - -
CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications
List SNSI3T-M3 SNSI3T-M4 SNSI3T-M5 SNSI3T-M6 SNSL-M3-UCL SNSL-M4-UCL SNSL-M5-UCL SNSL-M6-UCL SNSLG-M3-UCL SNSLG-M4-UCL SNSLG-M5-UCL SNSLG-M6-UCL SSHL-M3-UCL SSHL-M4-UCL SSHL-M5-UCL

Latest

No. 2: Vacuum environments

No. 2: Vacuum environments

Vacuum technology is often used in semiconductor manufacturing equipment. A vacuum is not required for all equipment. A vacuum would mainly be required for equipment that uses plasma or an electron beam. In Part 2, we introduce some NBK products that are ideal for use in these vacuum environments!

Description of Tamper Resistant Screws for the Engineers

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Galling and Seizing

Galling and Seizing

This is a phenomenon that occurs while tightening, where the surface of the screw thread melts or welds due to frictional heat and the screw stops moving. To resolve galling, NBK's special surface treatment screws, such as those with fluorine coating, are recommended.

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Micro Screws: M0.6 (S0.6) to M2.6 Lineup

NBK offers a wide-ranging lineup of small-diameter screws in various shapes and materials.
Various head diameters and heights are available for the same screw diameters, contributing to saving space.

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Select characteristics/function

Vacuum LowOutgas Cleanroom Specification Space Chemical-proof High strength High Specific Strength Heat-resistance Seizing & Sticking Prevention Antireflection Electrical Insulation Electric conducting Light Weight Easy to Use Loss Prevention Decoration Fixing/Positioning

Select Thread Size (Metric thread)

M2 M2.5 M2.6 M3 M4 M5 M6 M8 M10 M12 M16

Select Thread Size (Inch thread)

No.4-40UNC No.5-40UNC No.6-32UNC No.8-32UNC No.10-32UNF No.10-24UNC 1/4-20UNC

Select screw length（mm）

3 4 5 6 8 8.6 10 10.8 11.2 12 12.6 13.2 14 15 16 16.8 17.7 18 20 20.6 20.8 21.2 21.7 22 25 25.8 26.2 26.7 30 31.2 35 36.7 40 45 50 60 70 80 90 100 120 150

Select screw length（inch）

1" 1/2" 1/4" 1-1/2" 1-1/4" 1-3/4" 2" 3/16" 3/4" 3/8" 5/16" 5/8" 7/8"

Select material

Stainless Steel SUS304 Equivalent to SUS304 SUSXM7 (Equivalent to SUS304) SUS316L HiMo SUS316L Aluminum A5056 Titanium Grade 2 Titanium Nickel Alloy Inconel equiv. Hastelloy equiv. Molybdenum Pure Molybdenum Ceramic Al2O3 (Alumina 99.5%) Plastic PTFE (Polytetrafluoroethylene)

Stainless Steel

SUS304 Equivalent to SUS304 SUSXM7 (Equivalent to SUS304) SUS316L HiMo SUS316L

Aluminum

A5056

Titanium

Grade 2 Titanium

Nickel Alloy

Inconel equiv. Hastelloy equiv.

Molybdenum

Pure Molybdenum

Ceramic

Al2O3 (Alumina 99.5%)

Plastic

PTFE (Polytetrafluoroethylene)

Select thread/components

Bolts/Machine Screws Washer Setscrew Clamping Bolts/Screws Hexagon Posts Cover Caps

Select head shape

Cap Pan Flat Hexagon Low Profile Special Low Profile Small Head No

Select drive shape

Hex Sockets Cross-recessed sockets No

Select processing

With Through Hole With Relief Cut With Built-in Washer With Groove

Select surface treatment

Special Chemical Polishing Surface hardening treatment Stainless Steel Black Silver plating Low temperature black chrome treatment Molybdenum Disulfide Shot Treatment

Select coarse/fine

Coarse Fine