S-90317A582 M4 x 16 mm JIS B 1188-C Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior vibration resistance with integrated external-tooth lock washer that maintains clamping force in high-stress environments
- Exceptional corrosion protection through passivated finish on both screw and washer, ideal for harsh industrial conditions
- High mechanical strength with 70,000 PSI tensile strength and Rockwell B70 hardness for demanding applications
- Reliable thread engagement with Class 6g fit and coarse M4 x 0.7mm threading ensuring secure fastening
- Optimized drive performance featuring Phillips No. 2 drive for efficient installation and reduced cam-out risk
- Complete regulatory compliance meeting JIS B 1188-C standards, RoHS 3, and REACH requirements for global applications
- Full-thread design providing maximum grip length and uniform stress distribution across the entire fastener
Professional Applications & Engineering Value
This M4 metric screw with integrated external-tooth lock washer addresses critical vibration-induced loosening in industrial machinery, automotive assemblies, and electronic enclosures. The 18-8 stainless steel construction combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making it suitable for harsh manufacturing environments and outdoor applications. The pan head design with Phillips No. 2 drive offers optimal torque transmission while the coarse thread pitch ensures rapid installation and reliable performance in materials where fine threads might strip. Engineered to JIS B 1188-C standards, these screws deliver consistent quality and dimensional accuracy for precision assembly operations requiring Japanese industrial specifications.
Specification Summary & Compliance
This fully threaded M4 x 0.7mm x 16mm screw features Class 6g thread fit tolerance and coarse thread spacing per metric standards. The assembly includes an integrated external-tooth lock washer (8.5mm OD, 0.6mm thickness) manufactured from matching 18-8 stainless steel with passivated finish. Compliance is verified with JIS B 1188-C specifications, RoHS 3 (2015/863/EU) compliance, and REACH (EC 1907/2006) standards, ensuring environmental responsibility and regulatory acceptance for international industrial markets.
