S-90152A317 1/4"-20 x 1/4" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable 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 maintenance costs.
• High-strength reliability with 80,000 psi tensile strength and Rockwell B70 hardness, ensuring dependable performance under heavy loads.
• Precise, secure fastening thanks to Class 3A thread fit and UNC coarse threads, providing excellent vibration resistance and easier assembly.
• Efficient installation and removal with a 3/16" hex drive and standard socket head, allowing for high torque application in confined spaces.
• Full thread engagement along the entire 1/4" length, offering maximum grip and uniform stress distribution.
• Compliance with industry standards including ASME B18.3 and ASTM F837, guaranteeing dimensional accuracy and interchangeability.
• Environmentally safe usage with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This Socket Head Cap Screw is engineered to address critical challenges in demanding applications such as machinery assembly, automotive components, and precision equipment. The 18-8 Stainless Steel material provides excellent resistance to rust and oxidation, extending service life in moist or chemically aggressive settings. Its 1/4"-20 UNC coarse threads and Class 3A fit ensure tight, reliable connections that resist loosening under vibration, a common issue in dynamic industrial environments. The 3/16" hex drive design allows for efficient torque transmission, reducing installation time and tool wear. By combining high tensile strength with standardized dimensions per ASME B18.3, this fastener delivers consistent performance, minimizing downtime and ensuring safety in critical assemblies.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 3A thread fit for tight tolerances and UNC coarse threads (1/4"-20) in a right-hand direction. It is manufactured in accordance with ASME B18.3 and ASTM F837 specifications, ensuring reliability and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from restricted hazardous substances and safe for industrial use globally.