S-97345A511 10-24 ASME B18.3 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 70,000 psi tensile and 35,000 psi shear strength for reliable performance in high-stress applications.
• Precise Class 3A thread fit ensures secure, vibration-resistant fastening and consistent assembly quality.
• Knurled hex socket head provides enhanced grip for easy installation and removal, reducing tool slippage.
• Standardized UNC coarse thread facilitates quick assembly and disassembly, improving maintenance efficiency.
• Rigorous compliance with ASME B18.3 standards and RoHS 3/REACH regulations for guaranteed quality and environmental safety.
• Durable Rockwell B79 hardness maintains structural integrity under repetitive loads and mechanical wear.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The UNC coarse thread and Class 3A fit provide excellent resistance to loosening under vibration, making it ideal for rotating assemblies and pivoting mechanisms. The knurled hex socket drive ensures reliable torque transmission, reducing installation errors in confined spaces. With a high tensile strength of 70,000 psi and superior corrosion resistance, it delivers long-term reliability in demanding environments such as chemical processing, marine applications, and food manufacturing, where hygiene and durability are paramount. The precisely machined shoulder acts as a spacer or pivot point, eliminating the need for additional components and simplifying assembly.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC coarse thread with a Class 3A precision fit, ensuring tight tolerances for secure fastening. The shoulder diameter is 5/16" with a tolerance of -0.004" to -0.002", and the shoulder length is 3/4" with a tolerance of -0.005" to 0.005", guaranteeing consistent dimensional accuracy. It is manufactured in compliance with ASME B18.3 specifications and is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting the latest environmental and safety standards for industrial use.