S-92196A331 1/4"-28 x 2" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing replacement frequency.
• Exceptional strength and durability from 70,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable performance under high stress.
• Precise and secure fastening with Class 3A thread fit and 1/4"-28 UNF fine thread, providing excellent vibration resistance and joint integrity.
• Easy installation and high torque capability using a standard 3/16" hex drive, allowing for efficient assembly in confined spaces.
• Optimized for partial thread applications with a 1" minimum thread length on a 2" screw, offering flexibility for specific clamping and positioning needs.
• Compliance with major industry standards including ASME B18.3, ensuring dimensional accuracy, interchangeability, and reliability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for safe use.

Professional Applications & Engineering Value

These 18-8 stainless steel socket head cap screws are engineered to address critical challenges in demanding industrial settings. The fine UNF thread (1/4"-28) and Class 3A thread fit provide superior resistance to loosening under vibration, making them ideal for machinery, automotive assemblies, and precision equipment where reliability is paramount. The partially threaded design allows the unthreaded shank to act as a precise dowel, resisting shear forces and simplifying alignment in jigs and fixtures. Combined with a 3/16" hex drive and high tensile strength, these screws enable secure fastening in high-stress applications while the corrosion-resistant material ensures long-term performance in corrosive environments, reducing maintenance costs and downtime.

Specification Summary & Compliance

This socket head cap screw features a 1/4"-28 UNF fine thread with a Class 3A thread fit for high precision. It is manufactured in accordance with ASME B18.3 specifications, ensuring consistent dimensions and performance. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming adherence to environmental and safety standards for hazardous substances.