S-90402A707 M4 x 8 mm ASME B18.13.1M Steel Pan Head Phillips Screws with External-Tooth Lock Washer
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 provided by the integrated external-tooth lock washer, preventing loosening in high-stress applications
- Enhanced corrosion protection through zinc-plated steel construction, ensuring longevity in demanding industrial environments
- Maximum holding power with 60,000 psi tensile strength and Rockwell B73 hardness for reliable performance under heavy loads
- Quick installation and removal with No. 2 Phillips drive and fully threaded coarse pitch design
- Precise thread engagement guaranteed by Class 6g metric thread fit, reducing cross-threading risks
- Optimized load distribution through the 8mm pan head design with integrated washer functionality
- Regulatory compliance assurance meeting ASME B18.13.1M standards while being RoHS 3 and REACH compliant
Professional Applications & Engineering Value
These M4 metric screws with zinc-plated steel construction and external-tooth lock washer are engineered to solve critical industrial fastening challenges. The combination of coarse thread design and fully threaded configuration ensures rapid installation while maintaining exceptional grip strength in vibration-prone applications. The pan head profile with integrated lock washer provides superior clamping force distribution, preventing surface damage while maintaining secure connections in machinery, electrical enclosures, and automotive assemblies. With 60,000 psi tensile strength and Rockwell B73 hardness, these industrial fasteners deliver reliable performance in high-stress environments where vibration resistance and long-term durability are paramount.
Specification Summary & Compliance
This M4 x 0.7mm x 8mm screw features precise Class 6g thread fit according to metric standards with coarse thread spacing. Manufacturing specifications comply with ASME B18.13.1M for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining the highest quality standards.
