S-92198A237 1 1/4"-7 x 3 1/2" 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 industrial environments.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and stress.
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation.
• Coarse UNC threads enable faster installation and better grip in a wide range of materials.
• External hex drive and hex head design allows for easy tightening with standard tools, reducing assembly time.
• Class 2A thread fit offers consistent, reliable engagement while maintaining ease of assembly.
• Partial threading provides unthreaded shank for enhanced shear strength and precise clamping.

Professional Applications & Engineering Value

This heavy-duty hex head screw is engineered to address critical challenges in industrial fastening, such as vibration resistance, corrosion, and high-stress applications. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. The coarse UNC thread and partial threading design ensure secure fastening in soft or brittle materials, reducing the risk of stripping. With an external hex drive, it allows for high torque application, ensuring tight connections in machinery, structural frameworks, and heavy equipment assemblies. Its compliance with ASME B18.2.1 standards guarantees consistent quality and reliability for engineering projects requiring precise, durable fasteners.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit per UNC standards, ensuring dimensional accuracy and ease of assembly. It meets ASME B18.2.1 specifications for hex head fasteners and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.