S-90311A143 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch thread locker that maintains integrity from -50° to 250°F, preventing loosening in dynamic applications
• Superior corrosion resistance through 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precision alignment capability with 1/2" shoulder length providing accurate component positioning and reduced wear
• High-strength performance delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications
• Secure installation with Class 3A thread fit ensuring tight tolerances and reliable fastening in precision assemblies
• Easy installation and removal with hex socket drive and knurled head for improved grip during tool operation
• Industry compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw delivers exceptional engineering value in precision machinery and industrial equipment where vibration resistance and alignment accuracy are critical. The 316 stainless steel construction provides superior corrosion resistance for challenging environments including chemical processing, marine applications, and food processing equipment. The integrated nylon patch thread locker eliminates the need for separate locking components, maintaining secure fastening through temperature fluctuations and dynamic loads. The precision Class 3A thread fit combined with the 1/2" shoulder length ensures exact component positioning in rotating assemblies, pivoting mechanisms, and precision guides, reducing wear and maintaining alignment integrity. The socket head design with hex drive allows for efficient installation in confined spaces while the knurled head texture enhances grip during manual adjustments.

Specification Summary & Compliance

This shoulder screw features precision Class 3A thread fit with UNC coarse threading (10-24) and maintains tight shoulder diameter tolerance of -0.004" to -0.002". Manufactured to ASME B18.3 specifications, the component ensures dimensional consistency and reliable performance. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material restrictions. With Rockwell B79 hardness and mechanical properties verified to industry standards, this fastener delivers consistent performance across demanding applications.