S-90337A428 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding load applications.
• Precise alignment and reduced wear due to the Class 2A thread fit and precisely controlled shoulder diameter tolerance (-0.001" to 0").
• Easy installation in confined spaces with the low-profile socket head and 3/32" hex drive for efficient assembly.
• Reliable performance in automated systems with a right-hand UNC coarse thread for quick engagement and secure fastening.
• Consistent dimensional accuracy ensures interchangeability and reduces assembly errors in precision machinery.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for applications in machinery, automotive, and electronics where environmental factors are a concern. The Class 2A thread fit and precise shoulder diameter ensure minimal backlash and accurate positioning of components such as gears, pulleys, and linkages. The low-profile socket head with a hex drive allows for secure tightening in tight spaces, reducing the risk of stripping and improving maintenance efficiency. Its 70,000 psi tensile strength and robust construction support high-stress operations, enhancing the longevity and reliability of your equipment while meeting strict industry standards.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent engagement and ease of assembly. The shoulder diameter is manufactured to a tight tolerance of -0.001" to 0", ensuring precise fit in mating parts. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing the absence of hazardous substances and supporting environmentally responsible sourcing for global supply chains.