S-97345A189 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Precise alignment and pivot points provided by the 2" shoulder with tight diameter tolerance, reducing wear in mechanical assemblies.
• High-strength performance with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable load-bearing in demanding applications.
• Fine thread engagement with 10-32 UNF Class 3A fit for secure, vibration-resistant fastening and minimal risk of loosening.
• Easy installation and removal using the hex socket drive and knurled head, allowing for efficient assembly with standard tools.
• Compliance with industry standards including ASME B18.3, RoHS, and REACH, guaranteeing quality and environmental safety.
• Durable material hardness at Rockwell B79, providing excellent resistance to deformation under stress.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision mechanical systems, such as maintaining alignment in rotating assemblies and reducing friction in pivot joints. The 2" shoulder length and fine 10-32 UNF thread with Class 3A fit ensure exact positioning and secure fastening, minimizing play and vibration-induced failures. Commonly used in robotics, automotive components, and industrial machinery, the socket head design with knurling facilitates quick tool engagement, while the corrosion-resistant material withstands exposure to chemicals and moisture, enhancing durability in demanding environments. This combination of features delivers reliable performance, reducing maintenance needs and improving overall assembly efficiency.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for high precision. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring consistent dimensional accuracy. It is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for industrial use.