S-92198A412 7/16"-20 x 3 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress
• Precise and secure fastening ensured by the Class 2A thread fit and UNF fine thread spacing, minimizing the risk of loosening
• Easy installation and removal with the external hex drive and standard 5/8" head width, compatible with common tools
• Optimized load distribution from the partially threaded design, providing a strong grip where it's needed most
• Long-term reliability and compliance by meeting ASME B18.2.1 standards and being RoHS 3 & REACH compliant
• Durable performance in demanding applications due to the right-hand thread and robust hex head design

Professional Applications & Engineering Value

This 18-8 Stainless Steel Hex Head Screw is engineered to address critical challenges in industrial assembly, such as vibration resistance and environmental degradation. The UNF fine thread and Class 2A fit provide superior clamping force and reduce the likelihood of thread stripping, making it ideal for machinery, structural frameworks, and automotive components where precision is paramount. Its partially threaded shank concentrates strength at the engagement point, while the external hex drive allows for high-torque installation with standard wrenches. The inherent corrosion resistance of 18-8 stainless steel ensures longevity in moist or chemical-exposed settings, minimizing downtime and replacement costs. This fastener delivers consistent performance in heavy-duty applications, supported by its compliance with major industry standards.

Specification Summary & Compliance

This screw features a 7/16"-20 UNF thread with Class 2A dimensional accuracy and fine thread spacing for precise fits. It is manufactured in accordance with ASME B18.2.1 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety requirements for industrial use.