Screws with Special Surface Treatment

Screws with surface treatment for seizing prevention and reflection resistance.

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Part Name	Hex Head Screws (Galvanic Corrosion Prevention Treatment)	Hex Nuts (Galvanic Corrosion Prevention Treatment)	Washers (Galvanic Corrosion Prevention Treatment)	Hex Socket Head Cap Screws - SUS316L / Surface hardening treatment	High Strength Stainless Steel Socket Head Cap Screws - Surface Hardening	Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment	Hex Socket Head Cap Screws - Electroless Nickel Plating	Socket Head Cap Screws with Ultra Low Profile	Socket Head Cap Screws with Small Head
Part Number	SNH-GJ	SHN-GJ	SWA-F-GJ	SNSL-PN	SNSLG-PN	SVSL-PN	SNS-EL	SSH-EL	SNS-SD-EL
Feature	Galvanic Corrosion Prevention	Galvanic Corrosion Prevention	Galvanic Corrosion Prevention	Seizing Prevention	High Strength (Strength Class 10.8 Equivalent) Heat Resistance Seizing Prevention	Seizing prevention	High Strength	Special Low Profile Small Space	Small Head Small Space
Material	Steel	Steel	Steel	SUS316L	SUS316L	SUS316L	Steel	Steel	Steel
Surface Treatment	Galvanic Corrosion Prevention Treatment	Galvanic Corrosion Prevention Treatment	Galvanic Corrosion Prevention Treatment	Surface hardening treatment	Surface hardening treatment	Surface hardening treatment	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating
Thread Size	M5 ～ M16	M5 ～ M16	M5 ～ M16	M3 ～ M8	M3 ～ M6	M3 ～ M8	M3 ～ M10	M2 ～ M10	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	SNH-M10-GJ SNH-M12-GJ SNH-M16-GJ SNH-M5-GJ SNH-M6-GJ SNH-M8-GJ	SHN-M10-GJ SHN-M12-GJ SHN-M16-GJ SHN-M5-GJ SHN-M6-GJ SHN-M8-GJ	SWA-10.5-21-2-F-GJ SWA-13-24-2.5-F-GJ SWA-17-30-3-F-GJ SWA-5.3-10-1-F-GJ SWA-6.5-13-1-F-GJ SWA-8.5-18-1.6-F-GJ	SNSL-M3-PN SNSL-M4-PN SNSL-M5-PN SNSL-M6-PN SNSL-M8-PN	SNSLG-M3-PN SNSLG-M4-PN SNSLG-M5-PN SNSLG-M6-PN	SVSL-M3-PN SVSL-M4-PN SVSL-M5-PN SVSL-M6-PN SVSL-M8-PN	SNS-M10-EL SNS-M3-EL SNS-M4-EL SNS-M5-EL SNS-M6-EL SNS-M8-EL	SSH-M10-EL SSH-M2.5-EL SSH-M2-EL SSH-M3-EL SSH-M4-EL SSH-M5-EL SSH-M6-EL SSH-M8-EL	SNS-M10-SD-EL SNS-M3-SD-EL SNS-M4-SD-EL SNS-M5-SD-EL SNS-M6-SD-EL SNS-M8-SD-EL

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Part Name	Socket Head Cap Screws with Low Profile & Small Head	Socket Head Cap Screws with Ultra Low Profile & Small Head	Socket Button Head Cap Screws with Flange - Electroless Nickel Plating	Socket Head Cap Screws with Ultra Low Profile and Nylon Patch	Socket Head Cap Screws with Small Head and Nylon Patch	Socket Head Cap Screws with Ultra Low Profile & Small Head and Nylon Patch	Adjust Metal Washer - Steel - Electroless Nickel Plating	Socket Head Cap Captive Screws - Electroless Nickel Plating	Hex Socket Head Cap Screws - Fluorine Coating
Part Number	SLH-SD-EL	SSH-SD-EL	SFB-EL	SSH-EL-ALK	SNS-SD-EL-ALK	SSH-SD-EL-ALK	SWA-AWEL	SSC-SNS-EL	SNSS-FC
Feature	Low ProfileSmall Head Small Space	Special Low ProfileSmall Head Small Space	With Flange Small Space	Special Low Profile Space-Saving Nylon Patch	Small Head Space-Saving Nylon Patch	Special Low Profile Small Head Space-Saving Nylon Patch	Wide Variety	High Strength Captive/Loss Prevention	Seizing prevention
Material	Steel	Steel	Steel	Steel	Steel	Steel	Steel	Steel	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating	Electroless nickel plating	Fluorine coating
Thread Size	M3 ～ M10	M3 ～ M10	M3 ～ M8	M2 ～ M8	M3 ～ M8	M3 ～ M8	M2 ～ M20	M3 ～ M8	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	SLH-M10-SD-EL SLH-M3-SD-EL SLH-M4-SD-EL SLH-M5-SD-EL SLH-M6-SD-EL SLH-M8-SD-EL	SSH-M10-SD-EL SSH-M3-SD-EL SSH-M4-SD-EL SSH-M5-SD-EL SSH-M6-SD-EL SSH-M8-SD-EL	SFB-M3-EL SFB-M4-EL SFB-M5-EL SFB-M6-EL SFB-M8-EL	SSH-M2.5-EL-ALK SSH-M2-EL-ALK SSH-M3-EL-ALK SSH-M4-EL-ALK SSH-M5-EL-ALK SSH-M6-EL-ALK SSH-M8-EL-ALK	SNS-M3-SD-EL-ALK SNS-M4-SD-EL-ALK SNS-M5-SD-EL-ALK SNS-M6-SD-EL-ALK SNS-M8-SD-EL-ALK	SSH-M3-SD-EL-ALK SSH-M4-SD-EL-ALK SSH-M5-SD-EL-ALK SSH-M6-SD-EL-ALK SSH-M8-SD-EL-ALK	SWA-10-12-AWEL SWA-10-15-AWEL SWA-10-16-AWEL SWA-10-18-AWEL SWA-10-20-AWEL SWA-10-25-AWEL SWA-10-30-AWEL SWA-10-35-AWEL SWA-10-40-AWEL SWA-10-50-AWEL SWA-12-16-AWEL SWA-12-18-AWEL SWA-12-20-AWEL SWA-12-25-AWEL SWA-12-30-AWEL SWA-12-35-AWEL SWA-12-40-AWEL SWA-12-50-AWEL SWA-16-20-AWEL SWA-16-25-AWEL SWA-16-30-AWEL SWA-16-35-AWEL SWA-16-40-AWEL SWA-16-50-AWEL SWA-20-35-AWEL SWA-20-40-AWEL SWA-20-50-AWEL SWA-2-8-AWEL SWA-3-10-AWEL SWA-3-12-AWEL SWA-3-15-AWEL SWA-3-8-AWEL SWA-4-10-AWEL SWA-4-12-AWEL SWA-4-15-AWEL SWA-4-16-AWEL SWA-4-18-AWEL SWA-4-20-AWEL SWA-4-25-AWEL SWA-4-8-AWEL SWA-5-10-AWEL SWA-5-12-AWEL SWA-5-15-AWEL SWA-5-16-AWEL SWA-5-18-AWEL SWA-5-20-AWEL SWA-5-25-AWEL SWA-5-8-AWEL SWA-6-10-AWEL SWA-6-12-AWEL SWA-6-15-AWEL SWA-6-16-AWEL SWA-6-18-AWEL SWA-6-20-AWEL SWA-6-25-AWEL SWA-6-30-AWEL SWA-6-8-AWEL SWA-8-12-AWEL SWA-8-15-AWEL SWA-8-16-AWEL SWA-8-18-AWEL SWA-8-20-AWEL SWA-8-25-AWEL SWA-8-30-AWEL	SSC-SNS-M3-EL SSC-SNS-M4-EL SSC-SNS-M5-EL SSC-SNS-M6-EL SSC-SNS-M8-EL	SNSS-M10-FC SNSS-M3-FC SNSS-M4-FC SNSS-M5-FC SNSS-M6-FC SNSS-M8-FC

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Part Name	Socket Head Cap Screws with Small Head - Fluorine Coating	Socket Head Cap Screws with Ultra Low Profile & Small Head - Fluorine Coating	Socket Head Cap Captive Screws - Fluorine Coating	Hex Socket Head Cap Screws - MoS₂ Coating	Socket Head Cap Screws with Small Head - MoS₂ Coating	Socket Head Cap Screws with Ultra Low Profile & Small Head - MoS₂ Coating	Socket Head Cap Screws with Ventilation Hole - MoS₂ Shot	Hex Socket Head Cap Screws - Low Temperature Black Chrome	Flanged Socket Head Cap Screws - Low Temperature Black Chrome Treatment
Part Number	SNSS-SD-FC	SSHS-SD-FC	SSC-FC	SNSS-MO	SNSS-SD-MO	SSHS-SD-MO	SVSS-MOS	SNSS-RY	SFSS-RY
Feature	Small Head Space-saving Seizing Prevention	Special Low Profile Small Head Space-saving Seizing Prevention	Seizing Prevention Captive/Loss Prevention	Seizing prevention	Small Head Space-saving Seizing Prevention	Special Low Profile Small Head Space-saving Seizing Prevention	Seizing prevention	Chemical Resistance Reflection Resistance Seizing Prevention	Flanged Chemical Resistance Anti-reflection Seizing Prevention
Material	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)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Fluorine coating	Fluorine coating	Fluorine coating	Molybdenum disulfide coating	Molybdenum disulfide coating	Molybdenum disulfide coating	Molybdenum Disulfide Shot Treatment	Low temperature black chrome treatment	Low temperature black chrome treatment
Thread Size	M3 ～ M10	M3 ～ M10	M3 ～ M8	M3 ～ M10	M3 ～ M10	M3 ～ M10	M3 ～ M8	M3 ～ M10	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	SNSS-M10-SD-FC SNSS-M3-SD-FC SNSS-M4-SD-FC SNSS-M5-SD-FC SNSS-M6-SD-FC SNSS-M8-SD-FC	SSHS-M10-SD-FC SSHS-M3-SD-FC SSHS-M4-SD-FC SSHS-M5-SD-FC SSHS-M6-SD-FC SSHS-M8-SD-FC	SSC-M3-FC SSC-M4-FC SSC-M5-FC SSC-M6-FC SSC-M8-FC	SNSS-M10-MO SNSS-M3-MO SNSS-M4-MO SNSS-M5-MO SNSS-M6-MO SNSS-M8-MO	SNSS-M10-SD-MO SNSS-M3-SD-MO SNSS-M4-SD-MO SNSS-M5-SD-MO SNSS-M6-SD-MO SNSS-M8-SD-MO	SSHS-M10-SD-MO SSHS-M3-SD-MO SSHS-M4-SD-MO SSHS-M5-SD-MO SSHS-M6-SD-MO SSHS-M8-SD-MO	SVSS-M3-MOS SVSS-M4-MOS SVSS-M5-MOS SVSS-M6-MOS SVSS-M8-MOS	SNSS-M10-RY SNSS-M3-RY SNSS-M4-RY SNSS-M5-RY SNSS-M6-RY SNSS-M8-RY	SFSS-M4-RY SFSS-M5-RY SFSS-M6-RY SFSS-M8-RY

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Part Name	High Strength Stainless Steel Socket Head Cap Screws – Low Temperature Black Chrome Treatment	Socket Head Cap Captive Screws - Low Temperature Black Chrome Treatment	Hex Socket Head Cap Screws - PTFE Coating	Flanged Socket Head Cap Screws - PTFE Coating	High Strength Stainless Steel Socket Head Cap Screws – PTFE Coating	Socket Head Cap Captive Screws - PTFE Coating	Hex Socket Head Cap Screws - Gold Coating	Hex Socket Head Cap Screws - Super Black	Socket Head Cap Screws with Ventilation Hole - Silver Plating
Part Number	SNSLG-RY	SSC-RY	SNSS-TF	SFSS-TF	SNSLG-TF	SSC-TF	SNSS-AUS	SNSS-BK	SVSS-AG
Feature	High Strength (Strength Class 10.8 Equivalent) Non-magnetic Chemical Resistance Anti-reflection Seizing Prevention	Chemical Resistance Anti-reflection Seizing Prevention Captive/Loss Prevention	Chemical Resistance Seizing Prevention	Flanged Chemical Resistance Seizing Prevention	High Strength (Strength Class 10.8 Equivalent) Non-magnetic Chemical Resistance Seizing Prevention	Chemical Resistance Seizing Prevention Captive/Loss Prevention	Seizing prevention	Reflection Resistance Corrosion Resistance	Seizing prevention
Material	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS316L	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Low temperature black chrome treatment	Low temperature black chrome treatment	PTFE coating	PTFE coating	PTFE coating	PTFE coating	Gold Coating (Gold Purity: 99.99 wt%)	Stainless Steel Black	Silver plating
Thread Size	M3 ～ M6	M3 ～ M8	M3 ～ M10	M4 ～ M8	M3 ～ M6	M3 ～ M8	M3 ～ M10	M2 ～ M10	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	SNSLG-M3-RY SNSLG-M4-RY SNSLG-M5-RY SNSLG-M6-RY	SSC-M3-RY SSC-M4-RY SSC-M5-RY SSC-M6-RY SSC-M8-RY	SNSS-M10-TF SNSS-M3-TF SNSS-M4-TF SNSS-M5-TF SNSS-M6-TF SNSS-M8-TF	SFSS-M4-TF SFSS-M5-TF SFSS-M6-TF SFSS-M8-TF	SNSLG-M3-TF SNSLG-M4-TF SNSLG-M5-TF SNSLG-M6-TF	SSC-M3-TF SSC-M4-TF SSC-M5-TF SSC-M6-TF SSC-M8-TF	SNSS-M10-AUS SNSS-M3-AUS SNSS-M4-AUS SNSS-M5-AUS SNSS-M6-AUS SNSS-M8-AUS	SNSS-M10-BK SNSS-M2-BK SNSS-M3-BK SNSS-M4-BK SNSS-M5-BK SNSS-M6-BK SNSS-M8-BK	SVSS-M3-AG SVSS-M4-AG SVSS-M5-AG SVSS-M6-AG SVSS-M8-AG

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Part Name	Hex Head Screws - PFA Coating for Head	Seal Washers - PFA Coating
Part Number	SNHS-HTF	SWS-HTF
Feature	Chemical Resistance	Chemical Resistance
Material	SUSXM7 (Equivalent to SUS304)	SUS304
Surface Treatment	PFA Coating	PFA Coating
Thread Size	M3 ～ M8	M3 ～ M8
Operating Temperature (℃)	-	-
CAD	CAD	CAD
Specifications	Specifications	Specifications
List	SNHS-M3-HTF SNHS-M4-HTF SNHS-M5-HTF SNHS-M6-HTF SNHS-M8-HTF	SWS-3-HTF SWS-4-HTF SWS-5-HTF SWS-6-HTF SWS-8-HTF

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!

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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.

What are Captive Screws? Introduction of the NBK Captive Series

NBK has standardized products for fall prevention of parts in the knob, pull and e-nedzi.com (special screw) categories. Use NBK's Captive Series for food machinery, packaging machinery and chemical manufacturing equipment that require CE Marking Compliance and Contamination Control.

No. 8: Preventing Part Fall-out

Are you struggling with screw or washer fall-out during equipment assembly or maintenance?
Here we introduce products that can be used to prevent part fall-out.

Helpful Resources

No. 2: Vacuum environments

What are Hex Socket Head Cap Screws (cap bolts)?

What are Captive Screws? Introduction of the NBK Captive Series

No. 8: Preventing Part Fall-out

No. 6: Thermal Cycling

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

No. 6: Thermal Cycling

Stainless Steel Screws Resistant to High Pressure【Improved productivity/workability】

Vol.1 What is Seizing (Galling)?

Vol.7 Screw Tightening Control Methods

Select the best screws for your needs

Plastic Screw Property

Vol.4 What are washers used for?

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

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

No. 2: Vacuum environments

What are Captive Screws? Introduction of the NBK Captive Series

No. 8: Preventing Part Fall-out

No. 6: Thermal Cycling

Stainless Steel Screws Resistant to High Pressure【Improved productivity/workability】

No. 2: Vacuum environments

What are Captive Screws? Introduction of the NBK Captive Series

SEMS Screws: Efficiency and Convenience in Fastening

Stainless Steel Screws Resistant to High Pressure【Improved productivity/workability】

CE-marked components which prevent foreign matter contamination are required 【Safety / precautionary measures】

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 Characteristics

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

Vol.6 Varieties of Screws "Beyond" SUS

A new generation of disk couplings

A new generation of disk couplings

No. 6: Thermal Cycling

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

Comparison of the Dimensions of Low Profile Screws and Small Head Screws

No. ９: Increasing Throughput

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

What makes our custom screws special

Customization

NBK SPECIAL SCREWS

Flexus

Designs and Examples of What NBK Can Create

No. 6: Thermal Cycling

No. 5: Solving common problems inside equipment

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

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

Higher torque and Lower price.

No. 2: Vacuum environments

What are Hex Socket Head Cap Screws (cap bolts)?

What are Captive Screws? Introduction of the NBK Captive Series

For better drive

Plastic Screw Property

No. 2: Vacuum environments

What are Hex Socket Head Cap Screws (cap bolts)?

What are Captive Screws? Introduction of the NBK Captive Series

No. 8: Preventing Part Fall-out

No. 6: Thermal Cycling

Vol.1　What is Seizing (Galling)?

Vol.7　Screw Tightening Control Methods

Vol.4　What are washers used for?

Vol.6　Varieties of Screws "Beyond" SUS

Vol.1　What is Seizing (Galling)?

Vol.7　Screw Tightening Control Methods

Vol.1　What is Seizing (Galling)?

Vol.4　What are washers used for?

Vol.7　Screw Tightening Control Methods