S-91273A215 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing maintenance costs
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high-stress loads
• Precision alignment and smooth rotation ensured by the 6" shoulder with tight diameter and length tolerances for consistent assembly
• Secure, slip-resistant installation provided by the knurled hex socket head, allowing for high torque application without tool slippage
• Broad compatibility and easy assembly with 3/8"-16 UNC coarse threads and Class 2A fit, ensuring quick installation and interchangeability
• High shear resistance with minimum 35,000 psi shear strength, enhancing joint integrity in dynamic applications
• Compliance with global environmental standards including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices

Professional Applications & Engineering Value

This socket head shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 18-8 Stainless Steel material offers excellent corrosion resistance, making it suitable for applications in moist or chemically aggressive environments, such as machinery, automotive components, and food processing equipment. The 6" precision shoulder provides a consistent bearing surface, reducing wear and ensuring accurate positioning of moving parts like gears, pulleys, and linkages. With a knurled hex socket head, it enables secure, high-torque fastening, minimizing the risk of stripping during installation. The 3/8"-16 UNC coarse thread and Class 2A fit facilitate quick assembly and disassembly, enhancing productivity in maintenance and production lines. This fastener is ideal for high-strength applications requiring reliable performance and long service life.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and a shoulder diameter tolerance of -0.004" to -0.002" with length tolerance of -0.005" to 0.005" for accurate alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global supply chains. Manufactured to meet industrial requirements for strength and durability, it supports reliable performance in demanding applications.