S-90318A504 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.
• Exceptional mechanical strength offering a tensile strength of 70,000 psi and a shear strength of 35,000 psi for reliable performance under high-stress conditions.
• Precise alignment and pivot function enabled by the smooth, precisely toleranced shoulder with a diameter of 3/16" and length of 1".
• Secure and efficient installation with a socket head and 3/32" hex drive, allowing for high torque application in confined spaces.
• Reliable thread engagement provided by the 8-32 UNC coarse thread with a Class 2A fit, ensuring consistent fastening and vibration resistance.
• Compliance with stringent regulations, being RoHS 3 and REACH compliant, making it suitable for global industrial supply chains.
• Durable material hardness rated at Rockwell B70, providing excellent wear resistance and maintaining thread integrity over repeated use.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 316 Stainless Steel material offers outstanding resistance to corrosion and chemicals, which is vital in environments like marine, chemical processing, and food machinery. The precise shoulder with tight diameter and length tolerances ensures accurate component positioning, reducing wear and misalignment in assemblies such as rotating shafts, pivots, and guide mechanisms. The socket head design with a hex drive allows for easy installation in tight spaces, while the coarse UNC threads provide quick assembly and robust holding power. This combination of features minimizes maintenance needs and enhances the longevity of machinery, delivering reliable performance in demanding settings.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a shoulder diameter tolerance of -0.001" to 0" with a length tolerance of 0" to 0.002" for accurate assembly. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for various industrial and export markets. Manufactured from 316 Stainless Steel, it meets general industry standards for mechanical properties, including a tensile strength of 70,000 psi and Rockwell B70 hardness.