S-90403A857 M2 x 5 mm ASME B18.13.1M Steel Pan Head Phillips Screws with Internal-Tooth Lock Washer
Steel Pan Head Phillips Screws with Internal-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 internal-tooth lock washer to prevent loosening in high-stress applications
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial environments
- Optimized drive engagement with Phillips No. 1 drive for efficient installation and reduced cam-out risk
- Reliable thread performance featuring Class 6g metric coarse threads for consistent fastening in various materials
- High mechanical strength delivering 60,000 psi tensile strength and Rockwell B73 hardness for demanding applications
- Complete thread coverage with fully threaded design ensuring maximum grip length in limited space applications
- Regulatory compliance assurance meeting ASME B18.13.1M standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These M2 pan head screws with internal-tooth lock washers provide critical vibration-resistant fastening solutions for precision assemblies. The zinc-plated steel construction offers excellent corrosion resistance in industrial environments, while the metric coarse threading (0.4mm pitch) ensures reliable engagement in various substrates. The combination of 60,000 psi tensile strength and Rockwell B73 hardness makes these fully threaded screws ideal for electronics enclosures, machinery components, and automotive assemblies where space constraints and vibration are significant concerns. The Phillips drive design facilitates efficient installation in high-volume production settings, reducing assembly time while maintaining consistent torque application.
Specification Summary & Compliance
This M2 x 0.4mm x 5mm screw features Class 6g thread fit tolerance per metric standards and complies with ASME B18.13.1M manufacturing specifications. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. The internal-tooth lock washer (4.7mm OD, 0.33mm thickness) is manufactured from zinc-plated steel and provides consistent locking performance across the specified hardness and strength parameters.
