S-97345A329 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Enhanced assembly precision thanks to Class 3A thread fit, ensuring tight tolerances and reliable, vibration-resistant connections
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, providing dependable performance under load
• Secure and easy installation featuring a knurled socket head with 3/32" hex drive, preventing tool slippage and streamlining assembly
• Accurate component alignment due to the precision shoulder with controlled diameter and length tolerances
• Broad regulatory compliance including RoHS 3 and REACH, ensuring environmental safety and global market acceptance
• Optimized for coarse threading applications with 8-32 UNC right-hand threads, facilitating quick assembly and disassembly

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and corrosive operational environments. The Class 3A thread fit and precisely machined shoulder ensure minimal radial play, crucial for maintaining alignment in rotating assemblies and pivoting mechanisms. Its high tensile and shear strength supports demanding applications where mechanical stress is a concern, while the knurled socket head with hex drive allows for secure torque application, reducing the risk of fastener failure. The corrosion-resistant properties of 316 stainless steel make it suitable for industries like chemical processing, marine, and food equipment, where exposure to moisture and aggressive substances is common. This combination of precision engineering and durable materials delivers reliable performance, reducing maintenance needs and downtime in industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to UNC coarse thread standards with an 8-32 thread size and Class 3A thread fit for high precision. The shoulder features a diameter of 3/16" with a tolerance of -0.004" to -0.002" and a length of 1 7/8" with a tolerance of -0.005" to 0.005", ensuring consistent dimensional accuracy. It is manufactured from 316 stainless steel with a hardness of Rockwell B79, tensile strength of 70,000 psi, and minimum shear strength of 35,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industries.