S-90311A141 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial, marine, and chemical environments.
• Reliable vibration resistance thanks to the integrated nylon patch thread locker, maintaining secure fastening from -50° to 250°F.
• High mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications.
• Precise thread engagement with Class 3A thread fit, ensuring accurate alignment and reduced risk of cross-threading.
• Easy installation and removal with a hex socket drive and knurled head for improved grip and torque application.
• Durable and consistent performance backed by Rockwell B79 hardness and compliance with ASME B18.3 standards.
• Global regulatory compliance with RoHS 3 and REACH, ensuring safety and environmental standards are met.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address common industrial challenges such as loosening under vibration and exposure to corrosive elements. The 316 stainless steel material provides excellent resistance to chemicals and saltwater, making it suitable for marine equipment, chemical processing plants, and outdoor machinery. The nylon patch thread locker ensures that the fastener remains securely in place, even in high-vibration environments like automotive assemblies or heavy machinery. With its Class 3A thread fit and precise shoulder dimensions, this screw offers reliable alignment in pivots, bearings, and spacers, reducing wear and maintenance costs. The socket head design with a knurled texture allows for easy installation in confined spaces, enhancing efficiency in assembly lines and repair operations.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC coarse thread with Class 3A thread fit for high precision and strength. The shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 1/4" with a tolerance of -0.005" to 0.005", ensuring consistent performance in precision applications. It complies with ASME B18.3 manufacturing specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, providing assurance of quality and safety for global supply chains.