Vacuum

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

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Part Name	Hex Socket Head Cap Screws (Inconel equiv.) with Ventilation Hole	Hex Socket Head Cap Screws (Hastelloy C-276 equiv.) with Ventilation Hole	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 - High Intensity Stainless Steel	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)
Part Number	SVSI	SVSH-C276	SVSH-C22	SVSM	SVSA	SVSLG	SVSS	SVSS-PC	SVSS(INCH)
Feature	Chemical Resistance Heat Resistance	Chemical Resistance	Chemical Resistance	Heat Resistance	Lightweight	High Strength(Equivalent to Strength Class 10.8)	Standard	Low outgas	Inch Thread Socket Head Cap Screws
Material	Inconel equiv.	Hastelloy equiv.	Hastelloy equiv.	Pure molybdenum	A5056	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	Equivalent to SUS304
Surface Treatment	-	-	-	-	-	-	-	Special Chemical Polishing	-
Thread Size	M3 ～ M8	M3 ～ M8	M3 ～ M8	M3 ～ M8	M3 ～ M8	M3 ～ M6	M2 ～ M12	M3 ～ M12	No.4-40UNC ～ 1/4-20UNC
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	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	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	SVSLG-M3 SVSLG-M4 SVSLG-M5 SVSLG-M6	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

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Part Name	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	Washer Integrated Hex Socket Head Cap Screws with Ventilation Hole - High Strength Stainless Steel	Socket Head Cap Screws with Ventilation Hole - MoS₂ Shot	Socket Head Cap Screws with Ventilation Hole - Silver Plating	Hex Socket Head Cap Screws with Ventilation Hole - High Intensity S.S.	Socket Head Cap Screws with Ventilation Hole - SUS316L	Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment
Part Number	SVSI1S	SVSI1S-PC	SVSQS	SVSQLG	SVSS-MOS	SVSS-AG	SVSX-88	SVSL	SVSL-PN
Feature	Integrated Washers I=1	Integrated Washers I=1	Integrated Washers I=3	High Strength (Tensile Strength Ranking 10.8 Equivalent) Integrated Washers I=3	Seizing prevention	Seizing prevention	High Strength(Strength Class 8.8)	CorrosionResistance	Corrosion Resistance / Seizing prevention
Material	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS316L HiMo	SUS316L	SUS316L
Surface Treatment	-	Special Chemical Polishing	-	-	Molybdenum Disulfide Shot Treatment	Silver plating	-	-	Surface hardening treatment
Thread Size	M3 ～ M6	M3 ～ M6	M3 ～ M12	M3 ～ M6	M3 ～ M8	M3 ～ M8	M3 ～ M6	M3 ～ M12	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	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	SVSQLG-M3 SVSQLG-M4 SVSQLG-M5 SVSQLG-M6	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	SVSX-M3-88 SVSX-M4-88 SVSX-M5-88 SVSX-M6-88	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

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Part Name	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	Socket Head Cap Screws with Ventilation Hole with Low Profile	Socket Head Cap Screws with Ventilation Hole with Special Low Profile	Hex Socket Head Cap Screw with Special Low Profile (SUS316L, with Ventilation Hole)	Hex Socket Head Cap Screw with Special Low Profile (Titanium, with Ventilation Hole)	Hexagon Head Bolts (with Ventilation Hole)	Hex Socket Countersunk Head Screws with Ventilation Hole
Part Number	SVST	SNSI1T	SNSI3T	SVLS	SVSHS	SVSHL	SVSHT	SVHS	SVFCS
Feature	Lightweight Nonmagnetic Chemical Resistance	Integrated Washers I=1	Integrated Washers I=3	Low Profile Small Space	Special Low Profile Small Space	Special Low Profile Small Space	Lightweight Nonmagnetic Chemical Resistance	Hex head screws	Hex Socket CountersunkHead Screws Small Space
Material	Grade 2 Titanium	Grade 2 Titanium	Grade 2 Titanium	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS316L	Grade 2 Titanium	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Special Chemical Polishing	Special Chemical Polishing	Special Chemical Polishing	-	-	-	Special Chemical Polishing	-	-
Thread Size	M3 ～ M5	M3 ～ M6	M3 ～ M6	M3 ～ M10	M3 ～ M6	M3 ～ M5	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	SVST-M3 SVST-M4 SVST-M5	SNSI1T-M3 SNSI1T-M4 SNSI1T-M5 SNSI1T-M6	SNSI3T-M3 SNSI3T-M4 SNSI3T-M5 SNSI3T-M6	SVLS-M10 SVLS-M3 SVLS-M4 SVLS-M5 SVLS-M6 SVLS-M8	SVSHS-M3 SVSHS-M4 SVSHS-M5 SVSHS-M6	SVSHL-M3 SVSHL-M4 SVSHL-M5	SVSHT-M3 SVSHT-M4 SVSHT-M5 SVSHT-M6	SVHS-M3 SVHS-M4 SVHS-M5 SVHS-M6 SVHS-M8	SVFCS-M3 SVFCS-M4 SVFCS-M5 SVFCS-M6 SVFCS-M8

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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 Pan Head Machine Screws with Ventilation Hole	Phillips Cross Recessed Pan Head Titanium Machine Screws (with Ventilation Hole)	Hex Posts with Ventilation Hole	Hex Socket Head Cap Screws - Super Black	Hex Socket Head Cap Screws - Low Temperature Black Chrome	Socket Head Cap Captive Screws - Low Temperature Black Chrome Treatment	Washers with Ventilation Grooves
Part Number	SVFS	SVFT	SVPS	SVPT	SHVAS	SNSS-BK	SNSS-RY	SSC-RY	SWAS-VF
Feature	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	Stainless Steel Single - end Female Screw Type	Reflection Resistance Corrosion Resistance	Chemical Resistance Reflection Resistance Seizing Prevention	Chemical Resistance Anti-reflection Seizing Prevention Captive/Loss Prevention	Standard
Material	SUSXM7 (Equivalent to SUS304)	Grade 2 Titanium	SUSXM7 (Equivalent to SUS304)	Grade 2 Titanium	SUS304	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS304
Surface Treatment	-	Special Chemical Polishing	-	Special Chemical Polishing	-	Stainless Steel Black	Low temperature black chrome treatment	Low temperature black chrome treatment	-
Thread Size	M2 ～ M6	M3 ～ M4	M3 ～ M8	M3 ～ M5	M3 ～ M8	M2 ～ M10	M3 ～ M10	M3 ～ M8	M2 ～ M12
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	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	SHVAS-M3 SHVAS-M4 SHVAS-M5 SHVAS-M6 SHVAS-M8	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	SSC-M3-RY SSC-M4-RY SSC-M5-RY SSC-M6-RY SSC-M8-RY	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

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Part Name	Washers with Ventilation Grooves - Chemical Polish	Washers with Ventilation Grooves - Titanium	Hex Socket Set Screws (with Ventilation Hole)	Clamping Set Screws with Ventilation Hole	Clamping Set Screws with Ventilation Hole	Cover Caps	Cover Caps	Cover Caps - PTFE	Socket Head Cap Screws for Cover Caps
Part Number	SWAS-VF-PC	SWAT-VF	SVTS	SCSS-VR	SCSS-VF	SCAP-AL	SCAP-CE	SCAP-PT	SNCPS
Feature	Low outgas	Lightweight Nonmagnetic	Set Screws	For Fixing Full Ball	For Fixing Flat Ball	Low Outgas Corrosion Resistance	Heat Resistance Chemical Resistance Electrical Insulation	Chemical Resistance	For Cover Caps
Material	SUS304	Grade 2 Titanium	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	A5056	Al2O3 (Alumina 99.5%)	PTFE (Polytetrafluoroethylene)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Special Chemical Polishing	-	-	-	-	-	-	-	-
Thread Size	M3 ～ M12	M3 ～ M5	M3 ～ M8	M5 ～ M10	M5 ～ M10	M5 ～ M16	M5 ～ M16	M5 ～ M16	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	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	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	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

Latest

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.

What are Hex Nuts?

Here we offer a clear introduction to hex nuts.

What makes our custom screws special

The machine parts manufacturer Nabeya Bi-tech Kaisha (NBK) at e-nedzi.com manufactures special screws to the customer's specifications, such as tip machining and surface treatment. Special material screws, resin screws and loosening prevention are also available.

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Have you ever been surprised by rust suddenly appearing on rust-resistant aluminum?
If this happens, the reduced strength resulting from the corrosion brings fears of possible damage.
This phenomenon is known as "galvanic corrosion". Today, I will explain this principle and how it can be handled.

Helpful Resources

What is a Coupling? Explanation of Types and Features

What are Hex Nuts?

No. 8: Preventing Part Fall-out

What are Captive Screws? Introduction of the NBK Captive Series

What is a Linear Guide Stopper? Introduction to Types and Features!

Customization

Flexus【Muilti-Functional Machined Slotted Springs】

Designs and Examples of What NBK Can Create

Ball Rollers : Characteristics

Custom made

Couplings Bore and Keyway Additional Modification Service

Captive Processing Service

Cleanroom Wash / Cleanroom Packing Service

Screw Length Adjustment Service

Screw combination service

Galling and Seizing

What makes our custom screws special

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Fastening Screws in Areas with Cumulative Pitch Misalignment of Large Panels

Select the best screws for your needs

Plastic Screw Property

Chemical Resistance of Chemical-proof Screws

Property of Special Material Screws

Titanium Property

Screw Standards and Technical Information

Auto-Positioning Units Frequently Asked Questions (FAQ)

Coupling and Single-axis Actuator Assembly Method

Hints for correctly using NBK products: Quick Positioning Brackets

Hints for correctly using NBK products: Captive Washer for Pull

Hints for correctly using NBK products: Metal Super Knob

Choosing the most suitable coupling

Choosing the most suitable coupling

Procedure of Selection (Actuator)

Procedure of Selection

Procedure of Selection

What is a Coupling? Explanation of Types and Features

Galling and Seizing

Fastening Screws in Areas with Cumulative Pitch Misalignment of Large Panels

No. 8: Preventing Part Fall-out

What are Captive Screws? Introduction of the NBK Captive Series

What are Hex Nuts?

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

What are Captive Screws? Introduction of the NBK Captive Series

What are Washer-Integrated Screws (SEMS Screws)?An Explanation of Standards and Features

Magnetic shield (permalloy shield) must be fixed

Preventing gaps between the sheet and screw when fastening thin sheets

What is Specific Strength? A new index for weight reduction of equipment 【Smaller and Lighter】

Screws must be protected from chemicals 【Energy-saving / reduced work-hours】

Higher torque and Lower price.

NBK SPECIAL SCREWS

What is a Coupling? Explanation of Types and Features

Vol.6 Varieties of Screws "Beyond" SUS

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

High-Gain Rubber Type Coupling XG2

A new generation of disk couplings

Vol.6 Varieties of Screws "Beyond" SUS

No. ９: Increasing Throughput

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

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

What are clamp levers? Here we explain the characteristics and usage methods that help streamline screw tightening!

What makes our custom screws special

Customization

NBK SPECIAL SCREWS

Flexus【Muilti-Functional Machined Slotted Springs】

Designs and Examples of What NBK Can Create

Solving common issues with Semiconductor Manufacturing Equipment（Pre-Process）

What is Specific Strength? A new index for weight reduction of equipment 【Smaller and Lighter】

No. 6: Thermal Cycling

Higher torque and Lower price.

A new generation of disk couplings

What is a Coupling? Explanation of Types and Features

Galling and Seizing

What are Hex Nuts?

What makes our custom screws special

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

What is a Coupling? Explanation of Types and Features

Galling and Seizing

What are Hex Nuts?

What makes our custom screws special

Vol. 13 Explaining the Rust Source "Galvanic Corrosion"

Vol.6　Varieties of Screws "Beyond" SUS

Vol.6　Varieties of Screws "Beyond" SUS

Vol.6　Varieties of Screws "Beyond" SUS