S-90303A110 10-32 x 1/2" ASME B18.3, ASTM A574 Nylon-Tip Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior strength and durability with 180,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding applications.
• Non-marring protection thanks to the integrated nylon tip that prevents damage to contact surfaces, ideal for finished products or sensitive assemblies.
• Wide temperature resilience with a nylon tip operational from -50° to 250°F, ensuring consistent performance in varied environmental conditions.
• Precise, secure fastening achieved through Class 3A fine UNF threads, offering excellent vibration resistance and a tighter fit.
• Corrosion-resistant black-oxide finish on alloy steel enhances longevity and provides a professional appearance in industrial settings.
• Easy installation and removal with a standard hex socket head and 5/32" drive, allowing for efficient assembly with common tools.
• Full regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met for global supply chains.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical industrial challenges, such as maintaining surface integrity and withstanding high-stress environments. The 10-32 UNF fine thread and Class 3A fit provide superior holding power and vibration resistance, making it ideal for precision machinery, automotive assemblies, and electronic enclosures. The non-marring nylon tip is particularly valuable in applications where scratching or damage to components must be avoided, such as in consumer electronics or aerospace fixtures. By combining high tensile strength with a compliant tip, this screw reduces assembly errors and extends service life, delivering reliable performance in industrial applications that demand both durability and finesse.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for precise dimensional accuracy and features a fully threaded design with right-hand UNF fine threads. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and suitable for international industrial use.