S-90317A716 M6 x 25 mm ASME B18.13.1M Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior Vibration Resistance: Integrated external-tooth lock washer maintains clamp force under dynamic loads, preventing loosening in high-vibration environments.
• Exceptional Corrosion Resistance: Constructed from 18-8 Stainless Steel with a passivated finish for long-term reliability in harsh or outdoor conditions.
• High Mechanical Strength: Delivers a robust 70,000 psi tensile strength and Rockwell B70 hardness for demanding structural and industrial applications.
• Optimized for Efficient Installation: Phillips No. 3 drive and coarse M6 x 1mm thread enable quick and easy assembly with standard tools.
• Reliable Thread Engagement: Fully threaded design and Class 6g thread fit ensure consistent, precise fastening and uniform load distribution.
• Durable Locking System: The 410 Stainless Steel washer provides a matching level of corrosion resistance and mechanical durability to the screw assembly.
• Guaranteed Quality & Safety: Compliant with RoHS 3 and REACH regulations, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M6 rounded head screw with lock washer is engineered to solve critical challenges in industrial assembly. The combination of 18-8 stainless steel and a passivated finish provides a formidable barrier against rust and chemical attack, making it ideal for machinery, marine equipment, and food processing applications where moisture is a concern. The external-tooth lock washer bites into both the bearing surface and the screw head, creating a powerful locking action that resists loosening caused by vibration—a common failure point in automotive, conveyor systems, and powertrain assemblies. The fully threaded metric screw with a Class 6g fit offers excellent thread engagement in a variety of materials, ensuring a secure and reliable connection every time. This fastener is a complete precision fastening solution that enhances product longevity and reduces maintenance needs.

Specification Summary & Compliance

This screw features an M6 x 1mm coarse thread with a Class 6g tolerance for precision fit. It is manufactured to meet the dimensional and mechanical requirements of the ASME B18.13.1M standard. The assembly is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.