S-97345A861 5/8"-11 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 knurled head and standard shoulder fit, reducing assembly time and improving positioning accuracy
• High tensile strength of 70,000 PSI and minimum shear strength of 35,000 PSI for reliable performance in heavy-duty applications
• Class 3A thread fit provides tighter tolerances and secure fastening, minimizing backlash in precision machinery
• Easy installation and removal with 3/8" hex socket drive, allowing high torque application without slippage
• Compliance with ASME B18.3 standards guarantees consistent quality and interchangeability in professional applications
• Environmental regulation compliance with RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with 5/8"-11 UNC coarse threads and Class 3A precision is engineered to solve critical alignment challenges in demanding environments. The knurled socket head provides superior grip during installation, while the precisely machined shoulder acts as a durable alignment pin for rotating components, linkages, and machinery assemblies. Its corrosion-resistant properties make it ideal for marine, chemical processing, and food industry applications where moisture and aggressive substances are present. The combination of high tensile strength and Rockwell B79 hardness ensures long-term reliability in heavy-duty equipment, reducing maintenance frequency and downtime in industrial operations.

Specification Summary & Compliance

This shoulder screw maintains Class 3A thread fit with UNC coarse threading and precise shoulder diameter tolerance of -0.004" to -0.002". Manufactured to ASME B18.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The component meets rigorous mechanical requirements including 70,000 PSI tensile strength and 35,000 PSI minimum shear strength for reliable performance in precision industrial applications.