S-90324A098 10-24 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Exceptional thread engagement and reliability due to Class 3A thread fit and left-hand UNC coarse threading, preventing loosening under counter-clockwise forces
• High mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength, suitable for demanding, high-stress applications
• Enhanced grip and tool stability provided by the knurled socket head with a hex drive, reducing slippage during installation
• Precise component alignment and spacing enabled by the 1" shoulder with controlled diameter and length tolerances
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for global market acceptance
• Consistent performance and durability ensured by Rockwell B55 hardness, maintaining integrity under repetitive loads

Professional Applications & Engineering Value

This 10-24 UNC left-hand thread shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for applications in food processing, marine, and chemical industries where moisture and contaminants are concerns. The left-hand coarse thread (UNC) is specifically designed for components that rotate counter-clockwise, preventing unintended disassembly and enhancing safety in machinery like conveyor systems and rotating fixtures. The 1" shoulder length with tight tolerances ensures accurate alignment of parts such as gears, bearings, and pulleys, reducing wear and vibration. Combined with a knurled socket head for secure tool engagement, this screw provides reliable performance in automated equipment, robotics, and other industrial applications requiring high strength and precision.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise, secure fastening. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances and suitable for regulated industries.