S-8077A174 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Exceptional mechanical strength providing 70,000 psi tensile and 35,000 psi shear strength for reliable performance in high-stress applications
• Precise thread engagement with Class 3A fit and UNC coarse threading, ensuring secure fastening and reduced assembly time
• Enhanced wear resistance and reduced light reflection from the Black Oxide finish, improving durability and operator comfort
• Secure, non-slip installation facilitated by the knurled socket head and hex drive, allowing for high torque application
• Accurate component alignment due to the precisely toleranced shoulder diameter and length, critical for machinery and pivoting parts
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance for international projects

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in industrial assembly and precision machinery. The UNC coarse thread and Class 3A fit provide a robust, vibration-resistant connection that minimizes the risk of loosening in dynamic applications. The Black Oxide finish on the 316 stainless steel substrate offers an added layer of protection against corrosion and wear, extending component life in demanding environments such as chemical processing, marine equipment, and outdoor machinery. The integral shoulder acts as a precise pivot or spacer, ensuring accurate alignment of moving parts like gears, linkages, and bearings, which reduces wear and maintenance downtime. Its high tensile and shear strength makes it suitable for heavy-duty shoulder screw applications where load-bearing capacity is paramount, providing engineers with a reliable fastener that maintains integrity under stress.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise, secure fastening. Key dimensional tolerances include a shoulder diameter tolerance of -0.004" to -0.002" and a shoulder length tolerance of -0.005" to 0.005", ensuring consistent performance in precision assemblies. The screw is manufactured from 316 Stainless Steel with a hardness of Rockwell B79 and meets specified mechanical properties, including a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in products requiring adherence to strict environmental and safety standards.