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Loosening Prevention

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

Image Hex Socket Head Cap Screws with Special Low Profile (Nylon Patch) Socket Head Cap Screws with Small Head and Nylon Patch Socket Head Cap Screws with Ultra Low Small Head and 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) Socket Head Cap Screws with Small Head and Nylon Patch Socket Head Cap Screws with Ultra Low Small Head and Nylon Patch Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch)
Part Name Hex Socket Head Cap Screws with Special Low Profile (Nylon Patch) Socket Head Cap Screws with Small Head and Nylon Patch Socket Head Cap Screws with Ultra Low Small Head and 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) Socket Head Cap Screws with Small Head and Nylon Patch Socket Head Cap Screws with Ultra Low Small Head and Nylon Patch Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch)
Part Number SSH-EL-ALK SNS-SD-EL-ALK SSH-SD-EL-ALK SSHS-ALK SET-NI-ALK SETS-ALK SNSS-SD-ALK SSHS-SD-ALK SNZ-TBZ-ALK
Feature Special Low Profile
Space-Saving
Nylon Patch		 Small Head
Space-Saving
Nylon Patch		 Special Low Profile
Small Head
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		 Small Head
Space-Saving
Nylon Patch		 Special Low Profile
Small Head
Space-Saving
Nylon Patch		 Pan Head Machine Screw
for Precision Instruments
Nylon Patch
Material Steel Steel Steel SUSXM7 (Equivalent to SUS304) Steel SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) Steel
Surface Treatment Electroless nickel plating Electroless nickel plating Electroless nickel plating - Nickel plating - - - Black Trivalent Chromate Treatment
Thread Size M2 ～ M8 M3 ～ M8 M3 ～ M8 M2 ～ M8 M3 ～ M5 M2 ～ M6 M2 ～ M8 M2 ～ M8 M1.4 ～ M2.6
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 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 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 SNSS-M2.5-SD-ALK SNSS-M2-SD-ALK SNSS-M3-SD-ALK SNSS-M4-SD-ALK SNSS-M5-SD-ALK SNSS-M6-SD-ALK SNSS-M8-SD-ALK SSHS-M2.5-SD-ALK SSHS-M2-SD-ALK SSHS-M3-SD-ALK SSHS-M4-SD-ALK SSHS-M5-SD-ALK SSHS-M6-SD-ALK SSHS-M8-SD-ALK SNZ-M1.4-TBZ-ALK SNZ-M1.7-TBZ-ALK SNZ-M2.6-TBZ-ALK SNZ-M2-TBZ-ALK
Image Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch) Hexalobular Socket Extra Low Profile Miniature Screw / Nylon Patch Eccentric Lock Washer™ Socket Button Head Cap Screws with Flange Socket Button Head Cap Screws with Flange Hex Lock Nuts - Titanium Locking and Sealing Rings Locking and Sealing Rings Ribbed Lock Washers
Part Name Pan Head Machine Screws for Precision Instruments (Miniature Screws with Nylon Patch) Hexalobular Socket Extra Low Profile Miniature Screw / Nylon Patch Eccentric Lock Washer™ Socket Button Head Cap Screws with Flange Socket Button Head Cap Screws with Flange Hex Lock Nuts - Titanium Locking and Sealing Rings Locking and Sealing Rings Ribbed Lock Washers
Part Number SNZS-ALK SNZCXS-ALK SWAS-EW SFB SFBS SWUT SWH SWC SWR
Feature Pan Head Machine Screw
for Precision Instruments
Nylon Patch		 Flat Head Machine Screw
for Precision Instruments		 Vibration resistant treatment with commercial hexagon nut With Flange
Small Space		 With Flange
Small Space		 Lightweight
Nonmagnetic
Vibration Resistant		 For hex head screws and hex nuts For socket head cap screws Vibration Resistant
Material SUSXM7 (Equivalent to SUS304) SUSXM7 (Equivalent to SUS304) SUS304 Steel SUSXM7 (Equivalent to SUS304) Grade 2 Titanium Polyamide Polyamide Steel
Surface Treatment - - - Ferrosoferric Oxide Film (Black) - Special Chemical Polishing - - Ferrosoferric Oxide Film (Black)
Thread Size M1 ～ M2.6 M1.4 ～ M2.5 M6 ～ M12 M3 ～ M8 M3 ～ M6 M3 ～ M10 M3 ～ M12 M4 ～ 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 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 SFB-M3 SFB-M4 SFB-M5 SFB-M6 SFB-M8 SFBS-M3 SFBS-M4 SFBS-M5 SFBS-M6 SWUT-M10 SWUT-M3 SWUT-M4 SWUT-M5 SWUT-M6 SWUT-M8 SWH-10 SWH-12 SWH-3 SWH-4 SWH-5 SWH-6 SWH-8 SWC-10 SWC-12 SWC-4 SWC-5 SWC-6 SWC-8 SWR-10 SWR-12 SWR-16 SWR-2 SWR-2.5 SWR-20 SWR-3 SWR-4 SWR-5 SWR-6 SWR-8
Image Ribbed Lock Washers Seal Washer Seal Washer Seal washer Seal washer High Intensity Flat Washers Hex Lock Nuts
Part Name Ribbed Lock Washers Seal Washer Seal Washer Seal washer Seal washer High Intensity Flat Washers Hex Lock Nuts
Part Number SWRS SWS SWS-F SWS-E SWS-S SWF SWUS
Feature Vibration Resistant Air and Liquid LeakPrevention Air and Liquid LeakPrevention Air and Liquid LeakPrevention Prevention of
air/liquid leakage		 Vibration Resistant
High Strength		 Vibration Resistant
Material Stainless Steel SUS304 SUS304 SUS304 SUS304 Steel SUS304
Surface Treatment - - - - - Ferrosoferric Oxide Film (Black) -
Thread Size M1.6 ～ M20 M3 ～ M16 M3 ～ M16 M3 ～ M16 M3 ～ M16 M6 ～ M16 M6 ～ M12
Operating Temperature (℃) - - - - - - -
CAD CAD CAD CAD CAD CAD CAD CAD
Specifications Specifications Specifications Specifications 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 SWS-10 SWS-12 SWS-16 SWS-3 SWS-4 SWS-5 SWS-6 SWS-8 SWS-10-F SWS-12-F SWS-16-F SWS-3-F SWS-4-F SWS-5-F SWS-6-F SWS-8-F SWS-10-E SWS-12-E SWS-16-E SWS-3-E SWS-4-E SWS-5-E SWS-6-E SWS-8-E SWS-10-S SWS-12-S SWS-16-S SWS-3-S SWS-4-S SWS-5-S SWS-6-S SWS-8-S SWF-10 SWF-12 SWF-16 SWF-6 SWF-8 SWUS-M10 SWUS-M12 SWUS-M6 SWUS-M8

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Prevention of Screw Drive Damage

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SEMS Screws, Improved Fastening Efficiency Screws

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