S-8077A391 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance and reduced maintenance
• Precise alignment and secure positioning with a knurled head and standard shoulder fit, preventing component slippage during assembly
• High-strength performance under load with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable operation in demanding applications
• Accurate and secure fastening thanks to the 10-32 UNF fine thread with Class 3A fit, minimizing the risk of loosening in high-vibration settings
• Easy installation and removal with a hex socket drive, allowing for efficient tool engagement and reduced assembly time
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence for global use

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component wear. The black oxide finish not only enhances corrosion resistance but also reduces friction, extending service life in automated systems and industrial equipment. Featuring a 10-32 UNF fine thread and Class 3A fit, it provides tight tolerances for secure fastening in high-vibration environments like robotics, aerospace assemblies, and medical devices. The knurled head ensures a firm grip during installation, preventing tool slippage and improving efficiency. Ideal for applications requiring reliable shoulder screws, this component delivers consistent performance in demanding sectors, from manufacturing to electronics, by combining material strength with precise engineering.

Specification Summary & Compliance

This shoulder screw adheres to strict dimensional tolerances, including a Class 3A thread fit for precise engagement and a shoulder diameter tolerance of -0.004" to -0.002". It meets ASME B18.3 specifications for consistency and reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it ensures environmental safety and regulatory acceptance in industrial markets.