S-8077A353 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel construction, ideal for harsh environments like chemical processing and marine applications
• Enhanced durability and wear resistance with a black oxide finish that provides added surface protection and reduces galling
• Precise alignment and smooth rotation ensured by the 1/2" shoulder with standard fit, minimizing component wear in assemblies
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, reliably handling heavy loads
• Secure, non-slip installation thanks to the knurled socket head and 1/4" hex drive, allowing for high torque application
• Accurate and reliable fastening with Class 3A thread fit and fine UNF thread spacing, reducing the risk of loosening under vibration
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance

Professional Applications & Engineering Value

This 3/8"-24 UNF shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The 316 stainless steel material offers exceptional resistance to corrosion and oxidation, making it suitable for demanding environments such as chemical plants, marine hardware, and food processing equipment. The black oxide finish not only enhances aesthetic appeal but also provides a protective layer that reduces friction and prevents seizing during repeated use. With a Class 3A thread fit and fine thread spacing, it ensures tight, secure connections that resist loosening under dynamic loads and vibrations. The knurled socket head design allows for easy, tool-friendly installation, while the precisely machined shoulder maintains alignment in rotating assemblies, reducing wear on connected components. Ideal for applications in automation, aerospace, and heavy machinery, this shoulder screw delivers reliable performance, extended service life, and compliance with key industry regulations.

Specification Summary & Compliance

This shoulder screw adheres to tight dimensional tolerances, including a Class 3A thread fit for superior precision and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 standards, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer applications without hazardous substances.