S-97345A484 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for chemical, marine, and outdoor applications.
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under high-stress conditions.
• Precise assembly and alignment enabled by the Class 3A thread fit and standard shoulder, reducing play and improving component stability.
• Secure, non-slip fastening with the knurled socket head and hex drive, allowing for high-torque installation without stripping.
• Long-term durability supported by Rockwell B79 hardness, maintaining thread integrity and wear resistance over repeated use.
• Broad industry compliance including ASME B18.3 standards and RoHS 3/REACH regulations, ensuring safety and environmental responsibility.
• Optimized for coarse threading (UNC) providing faster installation and reduced cross-threading risk in industrial assemblies.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and structural assemblies where alignment and corrosion are primary concerns. The Class 3A thread fit and controlled shoulder dimensions ensure minimal tolerance stack-up, crucial for applications like rotating shafts, pivoting mechanisms, and bearing mounts. The coarse UNC threads facilitate quick assembly in high-vibration environments, while the knurled socket head design enhances grip during tool engagement, preventing slippage in confined spaces. With high tensile and shear strength, this fastener supports heavy-duty operations in manufacturing, automotive, and aerospace sectors, offering reliable performance where failure is not an option. Its compliance with ASME B18.3 and environmental standards further validates its use in regulated and demanding industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit tolerances for precise engagement, with UNC coarse threading (10-24 size) and a thread length of 3/8". The shoulder diameter is 1/4" with a tight tolerance of -0.004" to -0.002", and shoulder length is 13/16" (±0.005"). Manufactured in accordance with ASME B18.3 specifications, it is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets strict industry and environmental regulations for safe use.