S-95345A538 8-32 x 1/2" ASME B18.13 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior Vibration Resistance: Integrated 410 stainless steel external-tooth lock washer prevents loosening in high-vibration environments, ensuring long-term assembly integrity.
• Excellent Corrosion Protection: Passivated 18-8 stainless steel construction offers reliable resistance to rust and environmental degradation in demanding industrial settings.
• High Tensile Strength: With 70,000 psi tensile strength, these screws provide robust fastening performance for critical applications requiring dependable load-bearing capacity.
• Secure Drive Engagement: Phillips #2 drive design ensures positive tool engagement and reduces cam-out risk during installation, improving assembly efficiency.
• Optimized Thread Performance: UNC coarse threads with Class 2A fit enable quick installation and reliable engagement in various materials while maintaining consistent clamping force.
• Complete Regulatory Compliance: Meets ASME B18.13 specifications while being fully RoHS 3 and REACH compliant for global industrial applications.
• Enhanced Fastening System: Pre-assembled lock washer eliminates separate component handling, reducing installation time and preventing lost hardware.

Professional Applications & Engineering Value

These 8-32 pan head screws with integrated lock washers solve critical vibration-induced loosening problems in industrial equipment, machinery, and electronic enclosures. The 18-8 stainless steel construction with passivated finish provides exceptional corrosion resistance for harsh environments, while the external-tooth lock washer bites into mating surfaces to maintain clamp load under dynamic conditions. The fully threaded UNC coarse thread design ensures maximum engagement in various materials, and the Phillips #2 drive offers familiar, efficient installation. This combination delivers reliable performance in applications where vibration resistance, corrosion protection, and regulatory compliance are essential engineering requirements.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (8-32 size). The fastener system meets ASME B18.13 manufacturing specifications and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The combination of 18-8 stainless steel screw with 410 stainless steel lock washer, both featuring passivated finish, ensures consistent performance and regulatory acceptance for industrial applications worldwide.