Anti-Galling (Anti-Seize)

These screws have surface treatments that prevent galling during tightening.
By reducing the friction coefficient of the thread surfaces with plating or coatings, the required axial force can be achieved with lower tightening torque.
As a result, he generation of friction heat during tightening is minimized, effectively preventing galling and seizing.
There are surface-hardened screws that do not cause contamination, as well as screws with gold, fluorine, MoS2, and PTFE coatings.

GallingSeizingPrevention1en1

Image
Part Name	Hex socket Head Cap Screws with Ventilation Hole / Surface Hardening Treatment	Hex Socket Head Cap Screws - SUS316L / Surface hardening treatment	Hex Socket Head Cap Screws - Fluorine Coating	Hex Socket Head Cap Screws - MoS₂ Coating	Hex Socket Head Cap Screws - Low Temperature Black Chrome	Hex Socket Head Cap Screws - PTFE Coating	Socket Head Cap Captive Screws - Fluorine Coating	Socket Head Cap Captive Screws - Low Temperature Black Chrome Treatment	Socket Head Cap Captive Screws - PTFE Coating
Part Number	SVSL-PN	SNSL-PN	SNSS-FC	SNSS-MO	SNSS-RY	SNSS-TF	SSC-FC	SSC-RY	SSC-TF
Feature	Corrosion Resistance / Seizing prevention	Seizing Prevention	Seizing prevention	Seizing prevention	Chemical Resistance Reflection Resistance Seizing Prevention	Chemical Resistance Seizing Prevention	Seizing Prevention Captive/Loss Prevention	Chemical Resistance Anti-reflection Seizing Prevention Captive/Loss Prevention	Chemical Resistance Seizing Prevention Captive/Loss Prevention
Material	SUS316L	SUS316L	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	Surface hardening treatment	Surface hardening treatment	Fluorine coating	Molybdenum disulfide coating	Low temperature black chrome treatment	PTFE coating	Fluorine coating	Low temperature black chrome treatment	PTFE coating
Thread Size	M3 ～ M8	M3 ～ M8	M3 ～ M10	M3 ～ M10	M3 ～ M10	M3 ～ M10	M3 ～ M8	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	SVSL-M3-PN SVSL-M4-PN SVSL-M5-PN SVSL-M6-PN SVSL-M8-PN	SNSL-M3-PN SNSL-M4-PN SNSL-M5-PN SNSL-M6-PN SNSL-M8-PN	SNSS-M10-FC SNSS-M3-FC SNSS-M4-FC SNSS-M5-FC SNSS-M6-FC SNSS-M8-FC	SNSS-M10-MO SNSS-M3-MO SNSS-M4-MO SNSS-M5-MO SNSS-M6-MO SNSS-M8-MO	SNSS-M10-RY SNSS-M3-RY SNSS-M4-RY SNSS-M5-RY SNSS-M6-RY SNSS-M8-RY	SNSS-M10-TF SNSS-M3-TF SNSS-M4-TF SNSS-M5-TF SNSS-M6-TF SNSS-M8-TF	SSC-M3-FC SSC-M4-FC SSC-M5-FC SSC-M6-FC SSC-M8-FC	SSC-M3-RY SSC-M4-RY SSC-M5-RY SSC-M6-RY SSC-M8-RY	SSC-M3-TF SSC-M4-TF SSC-M5-TF SSC-M6-TF SSC-M8-TF

Image
Part Name	Socket Head Cap Screws with Small Head - Fluorine Coating	Socket Head Cap Screws with Small Head - MoS₂ Coating	Socket Head Cap Screws with Ultra Low Small Head - Fluorine Coating	Socket Head Cap Screws with Ultra Low Small Head - MoS₂ Coating
Part Number	SNSS-SD-FC	SNSS-SD-MO	SSHS-SD-FC	SSHS-SD-MO
Feature	Small Head Space-saving Seizing Prevention	Small Head Space-saving Seizing Prevention	Special Low Profile Small Head Space-saving Seizing Prevention	Special Low Profile Small Head Space-saving Seizing Prevention
Material	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)
Surface Treatment	Fluorine coating	Molybdenum disulfide coating	Fluorine coating	Molybdenum disulfide coating
Thread Size	M3 ～ M10	M3 ～ M10	M3 ～ M10	M3 ～ M10
Operating Temperature (℃)	-	-	-	-
CAD	CAD	CAD	CAD	CAD
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	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-FC SSHS-M3-SD-FC SSHS-M4-SD-FC SSHS-M5-SD-FC SSHS-M6-SD-FC SSHS-M8-SD-FC	SSHS-M10-SD-MO SSHS-M3-SD-MO SSHS-M4-SD-MO SSHS-M5-SD-MO SSHS-M6-SD-MO SSHS-M8-SD-MO

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