S-92198A721 1/2"-13 x 2 1/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing replacement frequency.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration, minimizing failure risks.
• Rockwell B70 hardness provides excellent durability and resistance to wear, extending the fastener's service life.
• Partially threaded UNC coarse thread design allows for faster installation and secure clamping in a wide range of materials.
• Class 2A thread fit offers consistent, easy assembly while maintaining strong holding power in industrial applications.
• External hex drive with 3/4" head width enables high-torque tightening with standard tools, speeding up maintenance and assembly.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees product reliability and environmental safety for global supply chains.

Professional Applications & Engineering Value

This 1/2"-13 UNC hex head screw is engineered to address critical fastening challenges in demanding sectors such as machinery assembly, construction, and marine equipment. The 18-8 stainless steel material delivers exceptional corrosion resistance, reducing maintenance costs in humid or chemically aggressive environments. Its coarse thread and partially threaded design ensure quick, secure engagement in soft metals or wood, preventing loosening under dynamic loads. With an external hex drive, it supports high-torque applications, making it ideal for structural connections where vibration resistance and 80,000 psi tensile strength are paramount. This screw meets rigorous industrial standards, providing long-term reliability and compliance for OEMs and MRO operations.

Specification Summary & Compliance

The screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and ease of assembly. It adheres to ASME B18.2.1 manufacturing specifications, ensuring consistent quality and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in restricted substance-sensitive applications.