Vibration Resistance

These screws are designed to prevent loosening.
Bolts with nylon patches use friction to suppress reverse rotation of the screw.
Eccentric Lock Washers, used in combination with hex nuts, greatly prevent loosening.
Lock nuts have friction rings to prevent loosening.
Loosening-Prevention_1en

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Part Name	Hex Socket Head Cap Screws with Special Low Profile (Nylon Patch)	Hex Socket Head Cap Screws with Special Low Profile (Stainless Steel / Nylon Patch)	Hexalobular Socket Head Cap Screws with Extreme Low Profile (Nylon Patch)	Hexalobular Socket Head Cap Screws with Extreme Low Profile (Nylon Patch)	Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch)	Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch)	Hexalobular Socket Extra Low Profile Miniature Screw / Nylon Patch	Eccentric Lock Washer™	Ribbed Lock Washers
Part Number	SSH-EL-ALK	SSHS-ALK	SET-NI-ALK	SETS-ALK	SNZ-TBZ-ALK	SNZS-ALK	SNZCXS-ALK	SWAS-EW	SWR
Feature	Special Low Profile Space-Saving Nylon Patch	Special Low Profile Space-Saving Nylon Patch	Hexalobular Socket Extra Low Profile Space-Saving Nylon Patch	Hexalobular Socket Extra Low Profile Space-Saving Nylon Patch	Pan Head Machine Screw for Precision Instruments Nylon Patch	Pan Head Machine Screw for Precision Instruments Nylon Patch	Flat Head Machine Screw for Precision Instruments	Vibration resistant treatment with commercial hexagon nut	Vibration Resistant
Material	Steel	SUSXM7 (Equivalent to SUS304)	Steel	SUSXM7 (Equivalent to SUS304)	Steel	SUSXM7 (Equivalent to SUS304)	SUSXM7 (Equivalent to SUS304)	SUS304	Steel
Surface Treatment	Electroless nickel plating	-	Nickel plating	-	Black Trivalent Chromate Treatment	-	-	-	Ferrosoferric Oxide Film (Black)
Thread Size	M2 ～ M8	M2 ～ M8	M3 ～ M5	M2 ～ M6	M1.4 ～ M2.6	M1 ～ M2.6	M1.4 ～ M2.5	M6 ～ M12	M2 ～ M20
Operating Temperature (℃)	-	-	-	-	-	-	-	-	-
CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications	Specifications
List	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	SSHS-M2.5-ALK SSHS-M2-ALK SSHS-M3-ALK SSHS-M4-ALK SSHS-M5-ALK SSHS-M6-ALK SSHS-M8-ALK	SET-M3-NI-ALK SET-M4-NI-ALK SET-M5-NI-ALK	SETS-M2.6-ALK SETS-M2-ALK SETS-M3-ALK SETS-M4-ALK SETS-M5-ALK SETS-M6-ALK	SNZ-M1.4-TBZ-ALK SNZ-M1.7-TBZ-ALK SNZ-M2.6-TBZ-ALK SNZ-M2-TBZ-ALK	SNZS-M1.4-ALK SNZS-M1.6-ALK SNZS-M1.7-ALK SNZS-M1-ALK SNZS-M2.5-ALK SNZS-M2.6-ALK SNZS-M2-ALK	SNZCXS-M1.4-ALK SNZCXS-M1.6-ALK SNZCXS-M2.5-ALK SNZCXS-M2-ALK	SWAS-10-EW SWAS-12-EW SWAS-6-EW SWAS-8-EW	SWR-10 SWR-12 SWR-16 SWR-2 SWR-2.5 SWR-20 SWR-3 SWR-4 SWR-5 SWR-6 SWR-8

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Part Name	Ribbed Lock Washers	Hex Lock Nuts	Hex Lock Nuts - Titanium
Part Number	SWRS	SWUS	SWUT
Feature	Vibration Resistant	Vibration Resistant	Lightweight Nonmagnetic Vibration Resistant
Material	Stainless Steel	SUS304	Grade 2 Titanium
Surface Treatment	-	-	Special Chemical Polishing
Thread Size	M1.6 ～ M20	M6 ～ M12	M3 ～ M10
Operating Temperature (℃)	-	-	-
CAD	CAD	CAD	CAD
Specifications	Specifications	Specifications	Specifications
List	SWRS-1.6 SWRS-10 SWRS-12 SWRS-16 SWRS-2 SWRS-2.5 SWRS-20 SWRS-3 SWRS-4 SWRS-5 SWRS-6 SWRS-8	SWUS-M10 SWUS-M12 SWUS-M6 SWUS-M8	SWUT-M10 SWUT-M3 SWUT-M4 SWUT-M5 SWUT-M6 SWUT-M8

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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.

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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"

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If this happens, the reduced strength resulting from the corrosion brings fears of possible damage.
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