S-8077A717 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and extended service life.
• Enhanced durability and wear resistance from the Black Oxide finish, providing added protection against abrasion and galling.
• Precise alignment and secure component positioning thanks to the 3/16" shoulder diameter and 3/4" shoulder length with tight tolerances.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications.
• Secure, precise thread engagement with Class 3A thread fit and coarse UNC threads, reducing the risk of cross-threading and loosening.
• Easy installation and removal using a standard 3/32" hex drive and knurled head for improved grip and torque application.
• Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address common challenges in precision assembly, such as misalignment and vibrational loosening. The 316 Stainless Steel material offers exceptional resistance to chemicals, saltwater, and high temperatures, making it ideal for marine, chemical processing, and food equipment. The Black Oxide finish not only enhances corrosion protection but also reduces friction during installation. With its Class 3A thread fit and coarse UNC thread, it ensures quick, secure fastening in machinery, pivots, and rotating assemblies, minimizing downtime and maintenance. The knurled head and hex drive provide reliable torque transmission, while the precise shoulder acts as a spacer or bearing surface, improving overall mechanical stability in automated systems and industrial tools.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Key dimensional tolerances include shoulder diameter (-0.004" to -0.002") and shoulder length (-0.005" to 0.005"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. Manufactured to deliver consistent performance with a hardness of Rockwell B79, it is suitable for applications requiring reliable mechanical properties and regulatory conformity.