NBK logo

Vented Screws / Vacuum Screws coarse/fine :Fine

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 coarse/fineFine
Image Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps
Part Name Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps Cover Caps
Part Number SCAP-3-AL SCAP-4-AL SCAP-5-AL SCAP-6-AL SCAP-8-AL SCAP-10-AL SCAP-3-CE SCAP-4-CE SCAP-5-CE
Feature Low Outgas
Corrosion Resistance		 Low Outgas
Corrosion Resistance		 Low Outgas
Corrosion Resistance		 Low Outgas
Corrosion Resistance		 Low Outgas
Corrosion Resistance		 Low Outgas
Corrosion Resistance		 Heat Resistance
Chemical Resistance

Electrical Insulation		 Heat Resistance
Chemical Resistance

Electrical Insulation		 Heat Resistance
Chemical Resistance

Electrical Insulation
Material A5056 A5056 A5056 A5056 A5056 A5056 Al2O3 (Alumina 99.5%) Al2O3 (Alumina 99.5%) Al2O3 (Alumina 99.5%)
Surface Treatment - - - - - - - - -
Thread Size M5 M6 M8 M10 M12 M16 M5 M6 M8
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SCAP-3-AL SCAP-4-AL SCAP-5-AL SCAP-6-AL SCAP-8-AL SCAP-10-AL SCAP-3-CE SCAP-4-CE SCAP-5-CE
Image Cover Caps Cover Caps Cover Caps Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE
Part Name Cover Caps Cover Caps Cover Caps Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE Cover Caps - PTFE
Part Number SCAP-6-CE SCAP-8-CE SCAP-10-CE SCAP-3-PT SCAP-4-PT SCAP-5-PT SCAP-6-PT SCAP-8-PT SCAP-10-PT
Feature Heat Resistance
Chemical Resistance

Electrical Insulation		 Heat Resistance
Chemical Resistance

Electrical Insulation		 Heat Resistance
Chemical Resistance

Electrical Insulation		 Chemical Resistance Chemical Resistance Chemical Resistance Chemical Resistance Chemical Resistance Chemical Resistance
Material Al2O3 (Alumina 99.5%) Al2O3 (Alumina 99.5%) Al2O3 (Alumina 99.5%) PTFE (Polytetrafluoroethylene) PTFE (Polytetrafluoroethylene) PTFE (Polytetrafluoroethylene) PTFE (Polytetrafluoroethylene) PTFE (Polytetrafluoroethylene) PTFE (Polytetrafluoroethylene)
Surface Treatment - - - - - - - - -
Thread Size M10 M12 M16 M5 M6 M8 M10 M12 M16
Operating Temperature (℃) - - - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications Specifications
List SCAP-6-CE SCAP-8-CE SCAP-10-CE SCAP-3-PT SCAP-4-PT SCAP-5-PT SCAP-6-PT SCAP-8-PT SCAP-10-PT

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

Description of Tamper Resistant Screws for the Engineers

This is the page on tamper-resistant screws in "Description of Special Screws for Designers." We introduce here what tamper-resistant screws are, the advantages of their use, various usage examples, and their types and characteristics.

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.

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

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.

Helpful Resources

Search by purpose

Product IntroductionCustomizationServices & Product OptionsIssue/case studiesTechnical DataUsageSelection MethodInstallation Method/MaintenanceSafety PrecautionsGlossary

Search by keyword

Improved productivity/workabilitySafety measures/precautionary measuresReduced cost/energy saving/long lifeVibration prevention/high precisionCompact/space-saving/lightweightCustomizationHigh strength/high rigidityHeat resistance/corrosion resistanceElegant functionality/designCleanroom/vacuum/non-magneticSeizing PreventionAutomation/robots/motorizationOthers

Search by industry

Machine ToolsSemiconductor Manufacturing EquipmentFood MachineryAutomotive Manufacturing ProcessMedical EquipmentFA Devices

Search by series

The Semiconductor Industry and NBKVideo LibraryHints for correctly using NBK productsSolution samplesWhat is a Screw?Description of Mechanical Components for EngineersDescription of Special Screws for Engineers3 Min Engineering TipsServices & Product OptionsTechnical Data

Search by product category

CouplingsSpecial ScrewsMachine ElementsFA solutions

Click here to see Special Screws

Screws compatible with clean environments

Screws compatible with clean environments

Low Profile Screws / Small Head Screws

Low Profile Screws / Small Head Screws

High Performance Stainless Steel Screws

High Performance Stainless Steel Screws

Titanium Screws

Titanium Screws

Special Material Screws

Special Material Screws

Tools

Tools

Screws with Special Surface Treatment

Screws with Special Surface Treatment

Micro Screws

Micro Screws

Captive Screws / Full Thread Screws

Captive Screws / Full Thread Screws

Quick Release Fasteners

Quick Release Fasteners

Functional Screws

Functional Screws

UNC Screws / UNF Screws

UNC Screws / UNF Screws

Security screws / Tamper Resistant Screws

Security screws / Tamper Resistant Screws

Hexalobular Screws

Hexalobular Screws

Plugs

Plugs

Washers / Inserts

Washers / Inserts

Plastic Screws

Plastic Screws

Vibration Resistance

Vibration Resistance

Screw Caps / Screw Covers

Screw Caps / Screw Covers

Chemical Resistance Screws

Chemical Resistance Screws

Socket Head Cap Screws

Socket Head Cap Screws

Hex Head Screws

Hex Head Screws

Sheet Metal Fasteners

Sheet Metal Fasteners

Vacuum

Vacuum

Low Outgassing

Low Outgassing

Cleanroom

Cleanroom

Chemical Resistance

Chemical Resistance

High Strength

High Strength

High Specific Strength

High Specific Strength

Heat Resistance

Heat Resistance

Galling & Seizing Prevention

Galling & Seizing Prevention

Prevention of Screw Drive Damage

Prevention of Screw Drive Damage

Anti-Reflective

Anti-Reflective

Electrical Insulation

Electrical Insulation

Non-Magnetic

Non-Magnetic

Lightweight

Lightweight

Compact and Space-Saving

Compact and Space-Saving

Increased Productivity

Increased Productivity

Captive

Captive

Loosening Prevention

Loosening Prevention

Decoration

Decoration

Fixing and Positioning

Fixing and Positioning

Conveyance

Conveyance

SEMS Screws / Improved Fastening Efficiency Screws

SEMS Screws / Improved Fastening Efficiency Screws

Recommended Items for You

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 Nonmagnetic 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