S-97345A357 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
• Enhanced durability and load-bearing capacity from 70,000 psi tensile strength and 35,000 psi minimum shear strength, ensuring reliable performance under stress.
• Precise thread engagement and vibration resistance with Class 3A thread fit and coarse UNC thread, reducing the risk of loosening in dynamic applications.
• Secure, non-slip installation thanks to the knurled socket head and hex drive, allowing for firm tool grip and easy torque application.
• Consistent dimensional accuracy with tight shoulder diameter and length tolerances, ensuring proper fit and alignment in assemblies.
• Long-term reliability supported by Rockwell B79 hardness, maintaining structural integrity and wear resistance over time.
• Compliance with global environmental standards including RoHS 3 and REACH, making it suitable for regulated industries and export markets.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with 8-32 UNC coarse thread is engineered to address common industrial challenges such as component misalignment, corrosion-induced failure, and assembly instability. The knurled socket head provides superior grip during installation, reducing slippage in high-torque scenarios, while the Class 3A thread fit ensures tight, secure fastening that resists vibration and loosening. Its precision shoulder acts as a reliable spacer or pivot in machinery, automation systems, and precision instruments, offering excellent corrosion resistance in demanding environments like marine, chemical processing, and food equipment. By combining high tensile and shear strength with strict dimensional tolerances, this screw minimizes downtime and maintenance costs, delivering consistent performance in heavy-duty industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise engagement. Key dimensions include a shoulder diameter of 7/32" (tolerance: -0.004" to -0.002") and shoulder length of 9/16" (tolerance: -0.005" to 0.005"), ensuring accurate assembly. Manufactured from 316 stainless steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting use in environmentally regulated and international markets.