With Built-in Washer Special Screws (Bolts)

Selection Conditions

Select processingWith Built-in Washer

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Part Name	Vented Socket Head Cap Screws with Captive Washers - High Strength Stainless Steel	Vented Socket Head Cap Screws with Captive Washers	Vented Socket Head Cap Screws with Captive Washers - Chemical Polishing	Vented Socket Head Cap Screws with Captive Washers	Titanium Hex Socket Head Cap Screws with Captive Washers	Titanium Hex Socket Head Cap Screws with Captive Washers	Hex Socket Head Cap Screws with Captive Washers- High Strength Stainless Steel	Titanium Hex Socket Head Cap Screws with Captive Washers	Titanium Hex Socket Head Cap Screws with Captive Washers
Part Number	SVSQLG	SVSI1S	SVSI1S-PC	SVSQS	SNSI1T	SNSI3T	SNSQLG	SNSI1T-UT	SNSI3T-UT
Feature	High Strength (Strength Class 10.8 Equivalent) Captive Washers I=4	Captive Washers I=1	Captive Washers I=1	Captive Washers I=3	Captive Washers I=1	Captive Washers I=3	High Strength (Strength Class 10.8 Equivalent) Heat Resistance Corrosion Resistance Nonmagnetic Captive Washers I=4	Captive Washers I=1	Captive Washers I=3
Material	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	Grade 2 Titanium	Grade 2 Titanium	SUS316L	Grade 2 Titanium	Grade 2 Titanium
Surface Treatment	-	-	Special Chemical Polishing	-	Special Chemical Polishing	Special Chemical Polishing	-	-	-
Thread Size	M3 ～ M6	M3 ～ M6	M3 ～ M6	M3 ～ M12	M3 ～ M6	M3 ～ M6	M3 ～ M6	M3 ～ M6	M3 ～ M6
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SVSQLG-M3 SVSQLG-M4 SVSQLG-M5 SVSQLG-M6	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	SNSI1T-M3 SNSI1T-M4 SNSI1T-M5 SNSI1T-M6	SNSI3T-M3 SNSI3T-M4 SNSI3T-M5 SNSI3T-M6	SNSQLG-M3 SNSQLG-M4 SNSQLG-M5 SNSQLG-M6	SNSI1T-M3-UT SNSI1T-M4-UT SNSI1T-M5-UT SNSI1T-M6-UT	SNSI3T-M3-UT SNSI3T-M4-UT SNSI3T-M5-UT SNSI3T-M6-UT

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Part Name	Phillips Cross Recessed Pan Head Machine Screws with Captive Washers	Phillips Cross Recessed Pan Head Machine Screws with Captive Washers	Hexalobular Socket Pan Head Machine Screws (with Pin) with Washer	Hexalobular Socket (with Pin) Pan Head Machine Screws with Washer with Nylon Patch	Socket Head Cap Screws with Captive Large Flat Washer for Slotted Holes	Socket Head Cap Screws with Washers for Sheet Metal (SEMS)	Phillips Pan Head Screws with Washers for Sheet Metal (SEMS)	Phillips Pan Head Screws with Washers for Sheet Metal (SEMS)	Hex Socket Head Cap Screws with Captive Washers
Part Number	SNPI1S	SNPI3S	SRTSQ-TZB	SRTSQ-TZB-ALK	SNSQS-LW	SNSQS-SUC	SNPI3-SUC	SNPI3S-SUC	SNSQS
Feature	Captive Washers I=1	Captive Washers I=3	Hexalobular Socket With Pin Captive Washer I=3	Hexalobular Socket With Pin Captive Washer I=3	For Long Holes Captive Washers Large-Diameter Plain Washers	For Sheet Metal Captive Washers P=3	For Sheet Metal Space-Saving Captive Washers P=3	For Sheet Metal Space-Saving Captive Washers P=3	Captive Washers I=3
Material	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	Steel	Steel	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	Steel	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	-	-	Trivalent chromate treatment	Trivalent chromate treatment	-	-	Trivalent chromate treatment	-	-
Thread Size	M2.5 ～ M5	M2 ～ M6	M2 ～ M4	M2 ～ M4	M3 ～ M6	M3 ～ M6	M3 ～ M5	M3 ～ M6	M3 ～ M6
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SNPI1S-M2.5 SNPI1S-M3 SNPI1S-M4 SNPI1S-M5	SNPI3S-M2 SNPI3S-M2.5 SNPI3S-M3 SNPI3S-M4 SNPI3S-M5 SNPI3S-M6	SRTSQ-M2.6-TZB SRTSQ-M2-TZB SRTSQ-M3-TZB SRTSQ-M4-TZB	SRTSQ-M2.6-TZB-ALK SRTSQ-M2-TZB-ALK SRTSQ-M3-TZB-ALK SRTSQ-M4-TZB-ALK	SNSQS-M3-LW SNSQS-M4-LW SNSQS-M5-LW SNSQS-M6-LW	SNSQS-M3-SUC SNSQS-M4-SUC SNSQS-M5-SUC SNSQS-M6-SUC	SNPI3-M3-SUC SNPI3-M4-SUC SNPI3-M5-SUC	SNPI3S-M3-SUC SNPI3S-M4-SUC SNPI3S-M5-SUC SNPI3S-M6-SUC	SNSQS-M3 SNSQS-M4 SNSQS-M5 SNSQS-M6

Select a product from category

Vented Screws / Vacuum Screws

Screws have gas ventilation holes for vacuum drawing of machines and have excellent corrosion resistance under vacuum environments.

Screws compatible with clean environments

Screws with cleanroom washing/cleanroom packing provided are available, along with screws compatible with clean environments such as those with ventilation holes.

Small Head Screws & Low Profile Screws

Compact head screws. Suitable for reducing the size of applications.

High Performance Stainless Steel Screws (Bolts)

High performance stainless steel screws have excellent strength, heat resistance, and corrosion resistance compared to standard stainless steel screws.

Titanium Bolts (Screws)

Screws made of titanium. They are lightweight, nonmagnetic, and chemically resistant.

Special Material Screws

Screws made of special materials such as Inconel, Molybdenum and Hastelloy to provide excellent heat, chemical, corrosion resistance.

Tools

A tool series dedicated for special applications.

Screws with Special Surface Treatment

Screws with surface treatment for seizing prevention and reflection resistance.

Micro / Miniature Screws

Small-diameter screws lower than M2.6 size for precision instruments.

Captive Bolts (Screws) / Full Thread Screws

Screws for falling-out prevention and screws with full thread.

Quick Release Fasteners

Components that allow easy fixture installation and removal without tools.

Functional Screws

Screws for fixing and locating clamping screws and ball plungers.

UNC Screws / UNF Screws

Screws for equipment and facilities that use inch-screw specifications.

Security Screws (Bolts) & Tamper Resistant Screws

Screws which cannot be installed or removed easily with standard tools to prevent theft and tampering.

Hexalobular Screws

Screws with strength socket heads. For repeating installations and removals.

Plugs

Screw plugs for hydraulic and pneumatic machinery and equipment. Washers for loosening prevention.

Washers / Inserts

Washers and inserts are available with a wide variety of outside diameters and thicknesses.

Plastic Screws (Bolts)

Various types of plastic screws made from materials such as VESPEL®, PEEK, and PTFE (Polytetrafluoroethylene).

Vibration Resistance

These screw components are highly effective for prevention of screw loosening due to vibration etc.

Screw Caps / Screw Covers

Protective caps for screw heads and tips.

Chemical Resistance Screws

Screws with special materials, surface treatments, and shapes for applications that require chemical resistance.

Socket Head Cap Screws (Bolts)

We have Socket Head Cap Screws with various kind of materials, surface treatments and characteristics.

Hex Head Bolts (Screws)

We have Hex Head Screws with various kind of materials, surface treatments and characteristics.

Sheet Metal Fasteners

Available to fix thin plate thickness over 0.1mm

SEMS Screws / Improved Fastening Efficiency Screws

Screws that do not require washers. This eliminates the need to incorporate washers and contributes to improved work efficiency.

Select a product from application

Purposes of use

Vacuum

Low Outgassing

Cleanroom

Chemical Resistance

High Strength

High Specific Strength

Heat Resistance

Galling & Seizing Prevention

Prevention of Screw Drive Damage

Anti-Reflective

Electrical Insulation

Non-Magnetic

Lightweight

Compact and Space-Saving

Increased Productivity

Captive

Loosening Prevention

Decoration

Fixing and Positioning

Conveyance

Latest

Select the best screws for your needs

This page helps to select a Product based on application needs. Vacuum, Low Outgas, Clean, Chemical Resistance, High Strength, Heat Resistance, etc. Vacuum, Low Outgas, Clean, Chemical Resistance, High Strength, Heat Resistance, etc

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!

SEMS Screws: Efficiency and Convenience in Fastening

A Guide to Special Screws for Designers: Washer-Integrated Screws (SEMS Screws).
This article provides a clear explanation of washer-integrated screws (SEMS screws), covering what they are, their advantages, examples of use, types, and features.

What are Socket Head Cap Screws (Bolts) ?

Hex Socket Head Cap Screws (cap bolts) are bolts (screws) with hexagon-shaped holes in their heads. It lists product descriptions for hex socket head cap screws, recommended products, etc.

Helpful Resources

Recommended Items for You

Select Thread Size (Metric thread)

S0.6 S0.8 M1 M1.2 M1.4 M1.6 M1.7 M2 M2.5 M2.6 M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36

Select Thread Size (Inch thread)

No.2-56UNC No.4-40UNC No.5-40UNC No.6-32UNC No.8-32UNC No.10-32UNF No.10-24UNC No.12-24UNC 1/4-28UNF 1/4-20UNC 5/16-18UNC 3/8-16UNC

What is a Swivel Mount?

No. 2: Vacuum environments

SEMS Screws: Efficiency and Convenience in Fastening

What are Socket Head Cap Screws (Bolts) ?

Miniature Screws/Precision Screws Lineup List

Customization

Flexus

Designs and Examples of What NBK Can Create

Ball Rollers : Characteristics

Custom made

Cleanroom Wash / Cleanroom Packing Service

Screw Length Adjustment Service

Couplings Bore and Keyway Additional Modification Service

Captive Processing Service

Screw combination service

Select the best screws for your needs

No. 6: Thermal Cycling

Washer fall-out prevention is required 【Workability/Maintenance】

Monitors need to be movable with one touch in accordance with the worker's height or the nature of the work【Improved productivity/workability】

Simple positioning with vertical axes is needed 【Workability / maintenance】

Screw Size Chart: Comprehensive Guide to Metric Dimensions

Hexalobular Internal Driving Feature for Bolts and Screws

Unified Coarse Screw Threads/Unified Fine Screw Threads

Vol. 12 Back to Basics Series! Screw Reference Dimensions

Slip Torque of Coupling – Set Screw Type

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

Hints for correctly using NBK products: Ball Plungers

Procedure of Selection

Choosing the most suitable coupling

Choosing the most suitable coupling

Procedure of Selection (Actuator)

Procedure of Selection

What is a Swivel Mount?

No. 2: Vacuum environments

No. 6: Thermal Cycling

Washer fall-out prevention is required 【Workability/Maintenance】

Monitors need to be movable with one touch in accordance with the worker's height or the nature of the work【Improved productivity/workability】

No. 2: Vacuum environments

SEMS Screws: Efficiency and Convenience in Fastening

What are Captive Bolts (Screws)? Introduction of the NBK Captive Series

Description of Tamper Resistant Screws & Security Screws (Bolts) for the Engineers

What are Hex Nuts?

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

Preventing gaps between the sheet and screw when fastening thin sheets

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

Higher torque and Lower price.

NBK SPECIAL SCREWS

What are Couplings? Explanation of Coupling Types and Characteristics

Select Based on Application

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

Vol.6 Varieties of Screws "Beyond" SUS

A new generation of disk couplings

Miniature Screws/Precision Screws Lineup List

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

No. 6: Thermal Cycling

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

What are low profile screws? Find advantages, disadvantages, and usage examples explained here!

What makes our custom screws special

Customization

NBK SPECIAL SCREWS

Flexus

Designs and Examples of What NBK Can Create

No. 6: Thermal Cycling

Select Based on Application

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

No. 5: Solving common problems inside equipment

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

What is a Swivel Mount?

Select the best screws for your needs

No. 2: Vacuum environments

What are Socket Head Cap Screws (Bolts) ?

Miniature Screws/Precision Screws Lineup List

What is a Swivel Mount?

Select the best screws for your needs

No. 2: Vacuum environments

What are Socket Head Cap Screws (Bolts) ?

Miniature Screws/Precision Screws Lineup List

Vol.6　Varieties of Screws "Beyond" SUS

Vol.1　What is Seizing (Galling)?

Vol.4　What are washers used for?

Vol.7　Screw Tightening Control Methods