S-98164A613 1-72 x 1/4" ASME B18.3, ASTM F879 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh environments and extended service life
• Precise, reliable fastening ensured by Class 3A thread fit and UNF fine thread profile, minimizing the risk of cross-threading and loosening
• High mechanical strength with 70,000 psi tensile strength, providing dependable performance under significant load and stress
• Efficient installation and removal facilitated by the hex drive style and rounded button head design, allowing for easy tool access and a clean, low-profile appearance
• Full compliance with industry standards including ASME B18.3, ensuring consistent quality, interchangeability, and engineering reliability
• Environmental and regulatory safety through RoHS 3 and REACH compliance, making them suitable for regulated industries and global supply chains
• Versatile 1/4" length and fully threaded design for broad application use and secure holding power across various material thicknesses

Professional Applications & Engineering Value

This 316 stainless steel rounded head screw is engineered to address critical challenges in precision assemblies where corrosion resistance, high strength, and reliable thread engagement are paramount. The UNF fine thread and Class 3A fit provide superior vibration resistance and clamping force in applications like electronics enclosures, medical devices, and marine equipment, preventing failure in dynamic or corrosive settings. The passivated finish enhances the innate corrosion resistance of 316 stainless, making it suitable for chemical processing, outdoor, and saline environments. Combined with a hex drive for secure torque application and a low-profile button head, these screws offer a robust, maintenance-free fastening solution that upholds integrity in demanding industrial fasteners applications.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for high precision and meets the dimensional requirements of ASME B18.3 (ASTM F879). It is manufactured from 316 stainless steel with a passivated finish, featuring a 1-72 UNF fine thread, right-hand direction, and is fully threaded. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and safe for use in various markets.