S-90696A192 1/4"-28 x 4 3/4" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Exceptional mechanical strength with a 70,000 psi tensile strength and Rockwell B70 hardness, ensuring high load-bearing capacity and resistance to deformation.
• Precise, reliable threading with a Class 3A UNF fine thread fit, providing secure, vibration-resistant connections in critical assemblies.
• Optimized for high-torque applications featuring a standard socket head with 3/16" hex drive, allowing for easy installation in confined spaces.
• Versatile partial threading design offers both threaded engagement and a smooth shank, ideal for clamping and alignment in machinery.
• Compliance with major industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Cap Screw is engineered to address common industrial challenges such as vibration loosening, corrosion in humid or chemical-laden environments, and the need for high-strength fastening in compact designs. The Class 3A UNF fine thread ensures a tight, precise fit that minimizes backlash and maintains clamp load under dynamic stresses, making it suitable for precision machinery, automotive subsystems, and electronic enclosures. Its partially threaded configuration allows the unthreaded portion to act as a dowel, providing shear resistance and accurate component alignment. The socket head design with a hex drive facilitates installation in tight spaces where wrench clearance is limited, enhancing assembly efficiency while the material’s innate corrosion resistance reduces maintenance needs and extends service life in demanding applications.

Specification Summary & Compliance

This socket head cap screw adheres to Class 3A thread fit tolerances per UNF standards, ensuring high precision and interchangeability. Manufacturing and dimensional criteria comply with ASME B18.3. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, affirming its adherence to restrictions on hazardous substances. Key dimensional attributes include a 1/4"-28 UNF fine thread, 4 3/4" length with a minimum thread length of 1", and a 3/16" hex drive size.