S-90402A702 M3 x 6 mm ASME B18.13.1M Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior vibration resistance with an integrated external-tooth lock washer that maintains clamp load in high-stress environments.
• Enhanced corrosion protection from zinc-plated steel construction, ensuring long-term reliability in various industrial conditions.
• High tensile strength of 60,000 psi for dependable performance in demanding applications without failure.
• Easy installation and removal with a Phillips No. 1 drive and fully threaded design for quick, secure fastening.
• Precise thread fit (Class 6g) and coarse pitch for reduced cross-threading and improved assembly efficiency.
• Compliance with ASME, RoHS 3, and REACH standards guarantees quality and environmental safety for global supply chains.
• Durable pan head design with a rounded profile for a flush finish and increased resistance to loosening under load.

Professional Applications & Engineering Value

This M3 x 0.5 mm metric screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in machinery, electronics, and automotive assemblies. The zinc-plated steel material offers excellent durability against wear and environmental exposure, while the external-tooth lock washer bites into surfaces to prevent back-off, ensuring stable connections in dynamic settings. With a coarse thread and Class 6g fit, it simplifies installation, reducing assembly time and errors. Ideal for applications requiring reliable vibration-resistant fastening, this screw delivers consistent performance in high-stress environments, supported by its full threading and robust pan head design that distributes load evenly.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 6g thread fit per metric specifications, ensuring accurate engagement and compatibility. It meets ASME B18.13.1M for mechanical and dimensional consistency, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances. The screw features a fully threaded M3 x 0.5 mm coarse pitch design, with a Rockwell B73 hardness and tensile strength of 60,000 psi, providing reliable performance in industrial fastening applications.