Increased Productivity

These are screws with a built-in washer, such as SEMS screws, or screws with a flange that provides a stable seating surface.
These screws simplify assembly work as they do not require separate washers.
There is no concern about forgetting to attach washers or them falling off.
Increased-Productivity_2en

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Part Name	Hexagon Head Screws with Captive Washer	Socket Head Cap Screws with Washers for Sheet Metal (SEMS)	Hexagon Head Screws with Captive Washer	Phillips Pan Head Screws with Washers for Sheet Metal (SEMS)	Phillips Pan Head Screws with Washers for Sheet Metal (SEMS)	Hexalobular Socket Pan Head Machine Screws (with Pin) with Washer	Hexalobular Socket (with Pin) Pan Head Machine Screws with Washer with Nylon Patch	Titanium Hex Socket Head Cap Screws with Captive Washers	Titanium Hex Socket Head Cap Screws with Captive Washers
Part Number	SNHP2S	SNSQS-SUC	SNHP3S	SNPI3-SUC	SNPI3S-SUC	SRTSQ-TZB	SRTSQ-TZB-ALK	SNSI1T	SNSI1T-UT
Feature	Compliant with JIS B 1187 With Captive Washer P=2	For Sheet Metal Captive Washers P=3	Compliant with JIS B 1187 With Captive Washer P=3	For Sheet Metal Space-Saving Captive Washers P=3	For Sheet Metal Space-Saving Captive Washers P=3	Hexalobular Socket With Pin Captive Washer I=3	Hexalobular Socket With Pin Captive Washer I=3	Captive Washers I=1	Captive Washers I=1
Material	Equivalent to SUS304	SUSXM7 (Equivalent to SUS304)	Equivalent to SUS304	Steel	SUSXM7 (Equivalent to SUS304)	Steel	Steel	Grade 2 Titanium	Grade 2 Titanium
Surface Treatment	-	-	-	Trivalent chromate treatment	-	Trivalent chromate treatment	Trivalent chromate treatment	Special Chemical Polishing	-
Thread Size	M4 ～ M10	M3 ～ M6	M4 ～ M12	M3 ～ M5	M3 ～ M6	M2 ～ M4	M2 ～ M4	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	SNHP2S-M10 SNHP2S-M4 SNHP2S-M5 SNHP2S-M6 SNHP2S-M8	SNSQS-M3-SUC SNSQS-M4-SUC SNSQS-M5-SUC SNSQS-M6-SUC	SNHP3S-M10 SNHP3S-M12 SNHP3S-M4 SNHP3S-M5 SNHP3S-M6 SNHP3S-M8	SNPI3-M3-SUC SNPI3-M4-SUC SNPI3-M5-SUC	SNPI3S-M3-SUC SNPI3S-M4-SUC SNPI3S-M5-SUC SNPI3S-M6-SUC	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	SNSI1T-M3 SNSI1T-M4 SNSI1T-M5 SNSI1T-M6	SNSI1T-M3-UT SNSI1T-M4-UT SNSI1T-M5-UT SNSI1T-M6-UT

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Part Name	Phillips Cross Recessed Pan Head Machine Screws with Captive Washers	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	Phillips Cross Recessed Pan Head Machine Screws with Captive Washers	Vented Socket Head Cap Screws with Captive Wahsers	Vented Socket Head Cap Screws with Captive Wahsers - Chemical Polish	Vented Socket Head Cap Screws with Captive Wahsers
Part Number	SNPI1S	SNSQS	SNSQLG	SNSI3T	SNSI3T-UT	SNPI3S	SVSI1S	SVSI1S-PC	SVSQS
Feature	Captive Washers I=1	Captive Washers I=3	High Strength (Strength Class 10.8 Equivalent) Heat Resistance Corrosion Resistance Nonmagnetic Captive Washers I=3	Captive Washers I=3	Captive Washers I=3	Captive Washers I=3	Captive Washers I=1	Captive Washers I=1	Captive Washers I=3
Material	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS316L	Grade 2 Titanium	Grade 2 Titanium	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	-	-	-	Special Chemical Polishing	-	-	-	Special Chemical Polishing	-
Thread Size	M2.5 ～ M5	M3 ～ M6	M3 ～ M6	M3 ～ M6	M3 ～ M6	M2 ～ M6	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	SNPI1S-M2.5 SNPI1S-M3 SNPI1S-M4 SNPI1S-M5	SNSQS-M3 SNSQS-M4 SNSQS-M5 SNSQS-M6	SNSQLG-M3 SNSQLG-M4 SNSQLG-M5 SNSQLG-M6	SNSI3T-M3 SNSI3T-M4 SNSI3T-M5 SNSI3T-M6	SNSI3T-M3-UT SNSI3T-M4-UT SNSI3T-M5-UT SNSI3T-M6-UT	SNPI3S-M2 SNPI3S-M2.5 SNPI3S-M3 SNPI3S-M4 SNPI3S-M5 SNPI3S-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

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Part Name	Vented Socket Head Cap Screws with Captive Washers - Hign Intensity Stainless Steel	Flanged Socket Head Cap Screws	Flanged Socket Head Cap Screws	Flanged Socket Head Cap Screws - Cleanroom Washed & Packaged	Flanged Socket Head Cap Screws with Nylon Patch	Flanged Socket Head Cap Captive Screws	Flanged Socket Head Cap Screws - Specialized Chemical Polishing	Flanged Socket Head Cap Screws - PTFE Coating	Flanged Socket Head Cap Screws - Low Temperature Black Chrome Treatment
Part Number	SVSQLG	SFS	SFSS	SFSS-UCL	SFSS-ALK	SSC-SFSS	SFSS-PC	SFSS-TF	SFSS-RY
Feature	High Strength (Strength Class 10.8 Equivalent) Captive Washers I=3	Flanged	Flanged	Flanged Cleanroom Washed & Packaged	Flanged Nylon Patch	Flanged Captive/Loss Prevention	Flanged Low Outgas	Flanged Chemical Resistance Seizing Prevention	Flanged Chemical Resistance Anti-reflection Seizing Prevention
Material	SUS316L	Steel	SUSXM7 (Equivalent to SUS304)	SUSXM7 (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	-	Ferrosoferric Oxide Film (Black)	-	-	-	-	Special Chemical Polishing	PTFE coating	Low temperature black chrome treatment
Thread Size	M3 ～ M6	M6 ～ M12	M4 ～ M8	M4 ～ M8	M4 ～ M8	M4 ～ M8	M4 ～ M8	M4 ～ M8	M4 ～ M8
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
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	SFS-M10 SFS-M12 SFS-M6 SFS-M8	SFSS-M4 SFSS-M5 SFSS-M6 SFSS-M8	SFSS-M4-UCL SFSS-M5-UCL SFSS-M6-UCL SFSS-M8-UCL	SFSS-M4-ALK SFSS-M5-ALK SFSS-M6-ALK SFSS-M8-ALK	SSC-SFSS-M4 SSC-SFSS-M5 SSC-SFSS-M6 SSC-SFSS-M8	SFSS-M4-PC SFSS-M5-PC SFSS-M6-PC SFSS-M8-PC	SFSS-M4-TF SFSS-M5-TF SFSS-M6-TF SFSS-M8-TF	SFSS-M4-RY SFSS-M5-RY SFSS-M6-RY SFSS-M8-RY

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Part Name	Flanged Hex Bolts	Flanged Hex Bolts	Socket Button Head Cap Screws with Flange	Socket Button Head Cap Screws with Flange - Electroless Nickel Plating	Socket Button Head Cap Screws with Flange	Vented Flanged Socket Head Cap Screws	Vented Flanged Socket Head Cap Screws – Specialized Chemical Polishing	Socket Button Head Cap Screws with Flange for Sheet Metal	Truss Head Phillips Screws for Sheet Metal
Part Number	SFH-TZB	SFHS	SFB	SFB-EL	SFBS	SVFSS	SVFSS-PC	SFBS-UC	SNMS-UC
Feature	Flanged Compliant with JIS B 1189	Flanged Compliant with JIS B 1189	With Flange Space-saving	With Flange Space-saving	With Flange Space-saving	With Flange	With Flange Low Outgas	Flanged Space-Saving For Sheet Metal (Plate Thickness 0.1mm or More)	Truss Head Screws Space-Saving For Sheet Metal (Plate Thickness 0.1mm or More)
Material	Steel	SUS304	Steel	Steel	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Trivalent chromate treatment	-	Ferrosoferric Oxide Film (Black)	Electroless nickel plating	-	-	Special Chemical Polishing	-	-
Thread Size	M8 ～ M12	M6 ～ M8	M3 ～ M8	M3 ～ M8	M3 ～ M6	M4 ～ M8	M4 ～ M8	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	SFH-M10-TZB SFH-M12-TZB SFH-M8-TZB	SFHS-M6 SFHS-M8	SFB-M3 SFB-M4 SFB-M5 SFB-M6 SFB-M8	SFB-M3-EL SFB-M4-EL SFB-M5-EL SFB-M6-EL SFB-M8-EL	SFBS-M3 SFBS-M4 SFBS-M5 SFBS-M6	SVFSS-M4 SVFSS-M5 SVFSS-M6 SVFSS-M8	SVFSS-M4-PC SVFSS-M5-PC SVFSS-M6-PC SVFSS-M8-PC	SFBS-M3-UC SFBS-M4-UC SFBS-M5-UC SFBS-M6-UC	SNMS-M3-UC SNMS-M4-UC SNMS-M5-UC SNMS-M6-UC

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Part Name	Hex Nuts / Hex Flange Nuts - Titanium	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile and Nylon Patch	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile and Nylon Patch	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile - Aluminum	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile (Inch Thread)	Hexalobular Socket Head Cap Screws with Super Ultra Low Profile - Stainless Steel (Inch Thread)
Part Number	SHNT-F	SET-NI	SET-BNI	SET-NI-ALK	SETS	SETS-ALK	SETA	SET-TZB(INCH)	SETS(INCH)
Feature	Lightweight Nonmagnetic Chemical Resistance With Flange	Hexalobular Socket Super Ultra Low Profile Space-saving	Hexalobular Socket Super Ultra Low Profile Space-saving	Hexalobular Socket Extra Low Profile Space-Saving Nylon Patch	Hexalobular Socket Super Ultra Low Profile Space-saving	Hexalobular Socket Extra Low Profile Space-Saving Nylon Patch	Super Special Low Profile With Hexalobular Socket Space-saving	Hexalobular Socket Super Ultra Low Profile Space-saving Inch Screws	Hexalobular Socket Super Ultra Low Profile Space-saving Inch Screws
Material	Grade 2 Titanium	Steel	Steel	Steel	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	A5056	Steel	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Special Chemical Polishing	Nickel plating	Black Nickel Plating	Nickel plating	-	-	-	Trivalent chromate treatment	-
Thread Size	M3 ～ M10	M3 ～ M5	M3 ～ M5	M3 ～ M5	M2 ～ M6	M2 ～ M6	M3 ～ M6	No.6-32UNC ～ No.10-32UNF	No.4-40UNC ～ No.10-32UNF
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	SHNT-M10-F SHNT-M3-F SHNT-M4-F SHNT-M5-F SHNT-M6-F SHNT-M8-F	SET-M3-NI SET-M4-NI SET-M5-NI	SET-M3-BNI SET-M4-BNI SET-M5-BNI	SET-M3-NI-ALK SET-M4-NI-ALK SET-M5-NI-ALK	SETS-M2 SETS-M2.6 SETS-M3 SETS-M4 SETS-M5 SETS-M6	SETS-M2.6-ALK SETS-M2-ALK SETS-M3-ALK SETS-M4-ALK SETS-M5-ALK SETS-M6-ALK	SETA-M3 SETA-M4 SETA-M5 SETA-M6	SET-#10-24-TZB SET-#10-32-TZB SET-#6-32-TZB SET-#8-32-TZB	SETS-#10-24 SETS-#10-32 SETS-#4-40 SETS-#6-32 SETS-#8-32

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Part Name	Cross Recessed Head Cap Screws with Super Ultra Low Profile	Cross Recessed Head Cap Screws with Super Ultra Low Profile	Cross Recessed Head Cap Screws with Super Ultra Low Profile - Stainless Steel
Part Number	SEQ-TZB	SEQ-TBZ	SEQS
Feature	Super Ultra Low Profile Space-saving	Super Ultra Low Profile Space-saving	Super Ultra Low Profile Space-saving
Material	Steel	Steel	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Trivalent chromate treatment	Black Trivalent Chromate Treatment	-
Thread Size	M3 ～ M4	M3 ～ M4	M3 ～ M4
Operating Temperature (℃)	-	-	-
CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications
List	SEQ-M3-TZB SEQ-M4-TZB	SEQ-M3-TBZ SEQ-M4-TBZ	SEQS-M3 SEQS-M4

Latest

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

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

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

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

No. 2: Vacuum environments

Description of Tamper Resistant Screws for the Engineers

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

No. 6: Thermal Cycling

Miniature Screws/Precision Screws Lineup List

Customization

Flexus【Muilti-Functional Machined Slotted Springs】

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

Galling and Seizing

No. 6: Thermal Cycling

Increased degree of vacuum in equipment is required 【Productivity increase】

Select the best screws for your needs

Select Based on Application

Slip Torque of Coupling – Set Screw Type

Property of High Performance Stainless Steel Screws

Plastic Screw Property

Vol.4 What are washers used for?

Hexagon Socket Head Cap Screws Excerpts from ISO 4762：2004, JIS B 1176:2015

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

Procedure of Selection

Choosing the most suitable coupling

Choosing the most suitable coupling

Procedure of Selection (Actuator)

Procedure of Selection

No. 2: Vacuum environments

Galling and Seizing

No. 6: Thermal Cycling

Increased degree of vacuum in equipment is required 【Productivity increase】

What is a Coupling? Explanation of Types and Characteristics

No. 2: Vacuum environments

Description of Tamper Resistant Screws for the Engineers

SEMS Screws: Efficiency and Convenience in Fastening

What are Hex Nuts?

Theft Prevention 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 is a Coupling? Explanation of Types and Characteristics

Select Based on Application

Vol.6 Varieties of Screws "Beyond" SUS

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

A new generation of disk couplings

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

No. 6: Thermal Cycling

Miniature Screws/Precision Screws Lineup List

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【Muilti-Functional Machined Slotted Springs】

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）

No. 2: Vacuum environments

Description of Tamper Resistant Screws for the Engineers

Galling and Seizing

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

Miniature Screws/Precision Screws Lineup List

No. 2: Vacuum environments

Description of Tamper Resistant Screws for the Engineers

Galling and Seizing

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

No. 6: Thermal Cycling

Vol.4　What are washers used for?

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