S-97345A474 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
• Precise component alignment ensured by the Class 3A thread fit and standard shoulder fit, reducing assembly errors and improving product reliability
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength, providing dependable load-bearing capacity in demanding applications
• Secure, non-slip fastening thanks to the knurled head and hex socket drive, allowing for high-torque installation without tool slippage
• Fine thread engagement with 10-32 UNF right-hand threads, offering excellent vibration resistance and holding power in precision assemblies
• Regulatory compliance assurance meeting ASME B18.3 specifications, RoHS 3, and REACH standards for global market acceptance and safety
• Dimensional stability with tight shoulder diameter and length tolerances, ensuring consistent performance and interchangeability in automated production

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and corrosive environments. The 10-32 UNF fine thread with Class 3A fit provides superior vibration resistance, preventing loosening in high-speed equipment and ensuring long-term operational integrity. The knurled socket head allows for secure tool engagement, reducing installation time and minimizing damage in confined spaces. With excellent corrosion resistance, it performs reliably in chemical processing, marine applications, and food-grade equipment. The precise shoulder diameter and length facilitate accurate component positioning in assemblies like bearings, linkages, and pivots, reducing wear and maintenance costs. Compliant with ASME B18.3, it meets rigorous industrial standards for quality and safety.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high-precision assemblies, with a thread size of 10-32 UNF and right-hand direction. The shoulder features a diameter of 1/4" (tolerance: -0.004" to -0.002") and length of 9/16" (tolerance: -0.005" to 0.005"), ensuring consistent performance. Manufactured to ASME B18.3 specifications, it is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting environmental and safety regulations. The material hardness is Rockwell B79, with mechanical properties including 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable industrial use.