S-90298A537 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Precise component alignment ensured by the 1/4" shoulder diameter with tight ±0.001" tolerance for reduced assembly play
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications
• Reliable thread engagement with Class 3A fit and 10-24 UNC coarse threads, providing superior vibration resistance
• Secure and easy installation featuring a knurled socket head with 1/8" hex drive for non-slip torque application
• Long-term durability backed by compliance with ASME B18.3 standards, ensuring consistent quality and interchangeability
• Environmentally responsible manufacturing meeting RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw is engineered to address critical alignment and load-bearing challenges in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and wear, making it suitable for applications in machinery, automotive, and electronics where exposure to moisture or chemicals is a concern. The 1/4" shoulder diameter with minimal tolerance ensures exact positioning of components like gears, pulleys, or linkages, reducing wear and improving operational accuracy. The coarse UNC threads and Class 3A fit offer robust fastening in high-vibration environments, while the knurled socket head allows for secure tool engagement during installation. Ideal for use in pivots, axles, and precision guides, this shoulder screw delivers reliable performance in industrial applications requiring repeatable accuracy and strength.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC thread with Class 3A fit for precise thread engagement, a shoulder diameter of 1/4" with tolerance of -0.001" to 0.001", and a shoulder length of 1/2" with tolerance of -0.005" to 0.005". Manufactured in accordance with ASME B18.3 specifications, it ensures dimensional consistency and reliability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety standards for global use.