S-92198A359 3/8"-24 x 2" 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 maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration, minimizing the risk of fastener failure.
• Precise Class 2A thread fit on the 3/8"-24 UNF fine thread allows for smooth assembly and a secure, vibration-resistant connection.
• External hex drive and hex head design provides a positive grip for high-torque installation and removal with standard tools.
• Partially threaded shank offers an unthreaded section for enhanced clamping force and precise alignment in assembled components.
• Rockwell B70 hardness provides excellent durability and resistance to wear, extending the service life of the screw.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality and material safety for regulated industrial applications.

Professional Applications & Engineering Value

This 18-8 stainless steel hex head screw is engineered to solve critical challenges in industrial assembly, where corrosion resistance and mechanical strength are paramount. The 3/8"-24 UNF fine threading with a Class 2A fit ensures tight, reliable fastening in applications susceptible to vibration loosening, such as heavy machinery, automotive subsystems, and structural frameworks. The partially threaded design concentrates clamping force on the unthreaded portion, preventing joint slippage and maintaining alignment in dynamic loads. With an 80,000 psi tensile strength and Rockwell B70 hardness, it withstands high-stress conditions without deforming, making it a trusted component for OEMs and MRO operations requiring long-term reliability and compliance with ASME B18.2.1 standards.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including a Class 2A thread fit for consistent engagement and an external hex drive for standardized tooling. It conforms to the ASME B18.2.1 specification for hex head screws and is verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for industrial use.