S-97345A531 10-24 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
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress
• Precise assembly and alignment enabled by the Class 3A thread fit and standard shoulder fit for reduced play and vibration
• Easy installation and removal with a hex socket drive and knurled head for improved grip and torque application
• Broad industry compatibility through compliance with ASME B18.3 standards and UNC coarse threading
• Enhanced durability from Rockwell B79 hardness, resisting wear and deformation in demanding applications
• Safe and sustainable use ensured by RoHS 3 and REACH compliance, meeting global environmental regulations

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in precision machinery, automotive assemblies, and industrial equipment. The UNC coarse thread and Class 3A thread fit provide secure fastening with minimal loosening, while the 3/8" shoulder length acts as a precise spacer or pivot in rotating parts, reducing misalignment and wear. The knurled head and hex drive facilitate quick maintenance in tight spaces, and the high tensile strength ensures reliability in dynamic loads. Its corrosion-resistant properties make it suitable for marine, chemical, and outdoor applications, delivering long-term performance and reducing downtime.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC thread with Class 3A fit for tight tolerances, a shoulder diameter of 1/4" with tolerance from -0.004" to -0.002", and shoulder length of 3/8" with tolerance from -0.005" to 0.005". It meets ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring quality and environmental safety.