Galling & Seizing Prevention

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

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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	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

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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

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