S-95345A522 8-32 x 1/4" ASME B18.13 Stainless Steel Pan Head Phillips Screws with External-Tooth Lock Washer

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments.
• Exceptional vibration resistance thanks to the integrated 410 stainless steel external-tooth lock washer, preventing loosening under dynamic loads.
• High tensile strength of 70,000 psi ensures maximum clamping force and reliable, long-lasting fastening.
• Effortless installation and removal with the standard Phillips No. 2 drive and fully threaded coarse UNC design.
• Precise and reliable thread engagement with Class 2A fit, ensuring consistent performance and ease of assembly.
• Secure and stable fastening from the rounded pan head design, providing a larger bearing surface.
• Guaranteed industrial compatibility by meeting ASME B18.13 standards and global environmental regulations like RoHS 3 and REACH.

Professional Applications & Engineering Value

This 8-32 x 1/4" rounded head screw is engineered to solve critical fastening challenges in demanding industrial settings. The combination of 18-8 stainless steel and a passivated finish provides excellent resistance to corrosion and oxidation, making it suitable for applications exposed to moisture, chemicals, or outdoor elements. The integrated external-tooth lock washer, made from 410 stainless steel, bites into mating surfaces to combat vibration-induced loosening—a common failure point in machinery, automotive assemblies, and electrical enclosures. The fully threaded UNC coarse thread and Phillips drive facilitate quick and secure installation, reducing assembly time while maintaining a high-strength hold. This screw delivers reliable performance in vibration-resistant applications, from manufacturing equipment to structural frameworks, ensuring operational safety and longevity.

Specification Summary & Compliance

This screw features a UNC 8-32 thread with a Class 2A fit for standard dimensional accuracy and easy assembly. It is fully threaded and measures 1/4" in length. The manufacturing and quality adhere to the ASME B18.13 specification. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.