S-90311A124 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Nylon patch thread locker maintains secure fastening under dynamic loads, preventing loosening in machinery and equipment.
• Superior corrosion resistance: 316 stainless steel construction ensures excellent performance in harsh, corrosive environments, reducing maintenance needs.
• High mechanical strength: With 70,000 psi tensile and 35,000 psi shear strength, it reliably handles high-stress applications without failure.
• Precise shoulder control: Knurled socket head and standard shoulder fit enable accurate alignment and secure grip during installation.
• Wide temperature tolerance: Operates effectively from -50° to 250°F, suitable for varied industrial climates and processes.
• Regulatory compliance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility in global supply chains.
• Easy installation: 3/32" hex drive and coarse UNC thread allow for quick, tool-friendly assembly in time-sensitive operations.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw with a 6-32 UNC coarse thread and Class 3A fit is engineered to address critical industrial challenges such as vibration-induced loosening and misalignment in assemblies. The nylon patch thread locking technology provides reliable retention without compromising disassembly, ideal for machinery, automotive, and electronics where consistent performance is paramount. Its knurled socket head design enhances grip during torque application, reducing slippage and ensuring precise shoulder alignment for components like bearings and pulleys. Combined with high tensile and shear strength, it offers durability in demanding environments, from manufacturing fixtures to outdoor equipment, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for tight tolerances and reliable engagement. Dimensions include a thread diameter of 0.138", shoulder diameter of 5/32" with tolerance from -0.004" to -0.002", and shoulder length of 5/16" with tolerance from -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for industrial use.