S-92198A558 1/4"-20 x 4" 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 industrial environments.
• High tensile strength of 80,000 psi ensures reliable performance in demanding heavy-duty applications.
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation.
• UNC coarse threading with Class 2A fit offers faster assembly and reliable engagement in a variety of materials.
• External hex drive and hex head design allows for high torque application with standard tools, simplifying installation.
• Partial threading provides an unthreaded shank for precise clamping and shear strength where needed.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality, safety, and environmental responsibility.

Professional Applications & Engineering Value

This 1/4"-20 x 4" hex head screw is engineered from 18-8 stainless steel to solve critical challenges in industrial settings, such as corrosion from chemicals or moisture. The UNC coarse thread and partial threading design prevent cross-threading and provide a strong grip in metal, wood, and composite assemblies, reducing installation time and failure risks. Its 80,000 psi tensile strength and external hex drive make it suitable for structural applications, machinery, and equipment where vibration resistance and long-term reliability are paramount. By meeting ASME B18.2.1 standards, it ensures dimensional consistency for seamless integration in OEM and MRO projects.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in compliance with ASME B18.2.1 specifications, ensuring precise dimensions and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for global industrial use.