S-90152A101 4-40 x 1/8" ASME B18.3, ASTM F837 Stainless Steel Wire-Lockable 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.
• High tensile strength of 80,000 psi ensures a secure, vibration-resistant hold in demanding applications.
• Precise Class 3A thread fit provides excellent engagement and reduces the risk of cross-threading during assembly.
• 3/32" hex drive socket head allows for high-torque installation and a clean, flush finish in confined spaces.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees consistent quality and environmental safety for global supply chains.
• Rockwell B70 hardness offers excellent wear resistance and durability under repeated use.
• Coarse UNC thread design enables quick assembly and reliable performance in a variety of materials.

Professional Applications & Engineering Value

Engineered for precision and endurance, this 4-40 UNC thread socket head cap screw is crafted from 18-8 Stainless Steel to combat corrosion in industrial settings such as machinery, electronics, and outdoor equipment. The 3/32" hex drive and standard socket head profile facilitate secure, high-torque fastening in tight spaces, minimizing the risk of stripping. With a Class 3A thread fit and coarse thread spacing, it ensures rapid, reliable installation while maintaining alignment. This screw is ideal for applications requiring robust, corrosion-resistant fasteners that meet stringent industry standards, reducing maintenance costs and enhancing operational uptime.

Specification Summary & Compliance

This socket head cap screw features a 4-40 UNC thread with Class 3A fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.