S-97345A487 10-32 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 chemical exposure.
• Enhanced load-bearing capacity from a 70,000 psi tensile strength and 35,000 psi minimum shear strength, ensuring reliable performance under stress.
• Precise alignment and secure positioning due to the 1/4" diameter shoulder with standard fit and tight tolerances, minimizing component misalignment.
• Secure, non-slip installation provided by the knurled socket head and 1/8" hex drive, allowing for high torque application without tool slippage.
• Exceptional thread engagement and vibration resistance from the 10-32 UNF fine thread with Class 3A fit, maintaining tight fastening in dynamic applications.
• Long-term durability and consistent performance backed by Rockwell B79 hardness, resisting wear and deformation over repeated use.
• Guaranteed compliance and interoperability with ASME B18.3 standards, RoHS 3, and REACH regulations, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assembly and machinery. The 10-32 UNF fine thread and Class 3A thread fit provide excellent vibration resistance, preventing loosening in high-motion equipment like robotics, conveyor systems, and automated actuators. The 1/4" shoulder diameter with controlled tolerances ensures accurate component alignment, reducing wear and extending service life in pivoting or rotating mechanisms. The knurled socket head with a 1/8" hex drive allows for secure, high-torque installation in confined spaces, common in electronic enclosures and precision instruments. Made from 316 stainless steel, it offers superior corrosion resistance in moist or chemical-laden environments, making it a reliable choice for marine, pharmaceutical, and food processing applications where hygiene and durability are paramount.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF fine thread with Class 3A thread fit for high precision. The shoulder has a diameter of 1/4" with a tolerance of -0.004" to -0.002" and a length of 1/4" with a tolerance of -0.005" to 0.005", ensuring consistent dimensional accuracy. It meets ASME B18.3 specifications for dimensional and mechanical requirements, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for global industrial use.