S-8077A219 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh or chemical-exposed environments
• Enhanced durability and wear resistance from the black oxide finish, which also reduces light reflection
• Precise and secure assembly ensured by the Class 3A thread fit, minimizing the risk of loosening under vibration
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
• Easy installation and removal with a hex socket drive and knurled head for improved grip and torque application
• Reliable shoulder positioning with standard shoulder fit, providing accurate alignment and spacing for rotating components
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assemblies, such as machinery, automotive, and electronics. The UNC coarse threading and Class 3A fit provide excellent engagement and vibration resistance, reducing maintenance needs in dynamic systems. The black oxide finish not only enhances corrosion resistance but also minimizes galling, making it suitable for high-humidity or chemical environments. With a knurled head and hex drive, it allows for secure tool engagement, preventing slippage during torque-intensive operations. Ideal for applications requiring precise shoulder alignment—such as pivots, guides, and rotating assemblies—this screw delivers long-term reliability and performance, even under 70,000 psi tensile loads.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Key dimensional tolerances include a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. The material hardness is Rockwell B79, supporting consistent performance in industrial applications.