S-90402A710 M4 x 16 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
- Vibration-resistant locking with integrated external-tooth lock washer prevents loosening in dynamic applications
- Enhanced corrosion protection through zinc-plated steel construction extends service life in harsh environments
- High-strength performance with 60,000 psi tensile strength and Rockwell B73 hardness ensures reliable fastening under load
- Quick installation with Phillips No. 2 drive and coarse M4 x 0.7mm thread profile reduces assembly time
- Secure fit maintenance through Class 6g thread fit and fully threaded design provides consistent clamping force
- Industry compliance with ASME B18.13.1M, RoHS 3, and REACH standards guarantees quality and safety
- Optimized head design with 8mm pan head diameter offers excellent bearing surface for distributed pressure
Professional Applications & Engineering Value
These M4 metric screws with zinc-plated steel construction and external-tooth lock washer address critical vibration-induced loosening in industrial equipment, automotive assemblies, and machinery applications. The coarse thread profile (M4 x 0.7mm) ensures rapid installation while maintaining Class 6g precision for consistent engagement in various materials. The combination of 60,000 psi tensile strength and Rockwell B73 hardness provides reliable performance in high-stress environments, while the fully threaded design maximizes grip length. The rounded pan head with Phillips drive offers both aesthetic appeal and practical installation benefits, making these vibration resistant screws ideal for maintenance, manufacturing, and assembly operations requiring secure, long-lasting fastening solutions.
Specification Summary & Compliance
These metric fasteners feature Class 6g thread fit tolerance and comply with ASME B18.13.1M manufacturing specifications. The zinc-plated steel construction meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental safety and regulatory adherence. The M4 x 0.7mm coarse thread with 16mm length and integrated external-tooth lock washer (8.25mm OD, 0.6mm thickness) provides reliable performance in accordance with industry standards for dimensional accuracy and material quality.
