S-92311A110 4-40 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Maximum holding power and minimal slipping due to the cup point tip design, ensuring secure component positioning.
• High-strength performance with a Rockwell B80 hardness, providing excellent durability under load.
• Precise and reliable fastening guaranteed by the Class 3A thread fit, offering tighter tolerances for critical applications.
• Easy installation in confined spaces using the hex drive and headless design, allowing for flush mounting.
• Broad industrial compatibility with UNC coarse threading and 4-40 size, ensuring easy sourcing and replacement.
• Compliance with rigorous standards including ASME B18.3, RoHS 3, and REACH, for safe and regulated use.

Professional Applications & Engineering Value

This 4-40 UNC set screw is engineered to address common industrial challenges such as component slippage and corrosion in demanding environments. Made from 18-8 Stainless Steel, it resists rust and chemical exposure, extending service life in machinery, automotive assemblies, and electronic enclosures. The headless design and hex drive enable secure, low-profile fastening where space is limited, while the cup point tip bites into surfaces to prevent rotational movement. With a Class 3A thread fit and coarse UNC thread, it ensures quick assembly and reliable performance in high-vibration settings, making it a trusted choice for precision engineering and maintenance tasks.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise dimensional accuracy. It features a 4-40 UNC coarse thread, right-hand direction, 1/2" length, and 0.050" hex drive size. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.