S-92198A573 1/4"-20 x 8" 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.
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress conditions.
• Secure and efficient assembly thanks to the external hex drive and Class 2A thread fit, ensuring precise engagement and vibration resistance.
• Optimized for quick installation with a coarse UNC thread and partial threading, reducing assembly time in industrial settings.
• Long-term durability in a heavy-duty 8-inch length, providing robust fastening for structural and machinery applications.
• Guaranteed dimensional consistency and interchangeability by conforming to the ASME B18.2.1 standard.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This 1/4"-20 UNC hex head screw is engineered to solve critical fastening challenges in demanding industrial applications. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor equipment, marine hardware, and chemical processing plants where environmental factors degrade ordinary fasteners. Its partially threaded design concentrates the 80,000 psi tensile strength where it's needed most, preventing thread stripping and ensuring a firm grip in assembled components. The coarse thread and external hex drive allow for rapid installation and high torque application with standard tools, reducing labor time in assembly lines and maintenance operations. This combination of corrosion-resistant properties and high-strength performance delivers long-term reliability, minimizing downtime and replacement costs in heavy machinery, construction frameworks, and transportation equipment.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 2A fit for consistent dimensional accuracy and easy assembly. It is manufactured in accordance with the ASME B18.2.1 standard, ensuring mechanical and dimensional reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for use in various global markets.