S-91241A803 M3 x 8 mm ASME B18.13 Stainless Steel Pan Head Phillips Screws with Spring Lock Washer

Key Features & Benefits at a Glance

• Enhanced Vibration Resistance: Integrated spring lock washer prevents loosening under dynamic loads, ensuring reliable performance in high-stress environments.
• Superior Corrosion Resistance: Made from 18-8 stainless steel with a passivated finish, offering excellent durability against moisture and harsh chemicals.
• High Tensile Strength & Hardness: With 70,000 psi tensile strength and Rockwell B80 hardness, these screws withstand significant mechanical stress without failure.
• Easy Installation & Secure Fastening: Phillips No. 1 drive allows for efficient torque application, while the fully threaded M3 x 0.5mm coarse thread ensures quick, stable assembly.
• Precision Thread Fit: Class 6g thread tolerance provides consistent, reliable engagement with mating components, reducing the risk of cross-threading.
• Durable Washer Construction: The 410 stainless steel spring lock washer, also passivated, adds an extra layer of corrosion protection and locking security.
• Compliance with Industry Standards: Meets ASME B18.13 specifications and is RoHS 3 & REACH compliant, ensuring safety and regulatory adherence for global use.

Professional Applications & Engineering Value

These M3 pan head Phillips screws with spring lock washers are engineered to address common industrial challenges such as vibration-induced loosening and corrosion in demanding environments. The combination of 18-8 stainless steel material and a passivated finish provides robust resistance to rust and chemical exposure, making them ideal for applications in electronics, automotive assemblies, and machinery where reliability is critical. The fully threaded metric coarse thread design ensures quick installation and strong holding power, while the integrated spring lock washer maintains clamp force under dynamic conditions, reducing maintenance needs and downtime. This makes them a valuable choice for engineers seeking durable, vibration-resistant fasteners that comply with international standards like ASME B18.13.

Specification Summary & Compliance

This screw features precise Class 6g thread fit per metric standards, with dimensions of M3 x 0.5mm pitch and 8mm length. It is manufactured in accordance with ASME B18.13 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. The passivated finish on both the screw and 410 stainless steel washer enhances corrosion resistance, supporting long-term performance in industrial settings.