S-97381A302 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Lightweight yet durable construction using 6061 aluminum for excellent corrosion resistance and reduced component weight in assemblies.
• Precise pivoting and alignment with a 3/8" shoulder length and controlled diameter tolerance for smooth rotational movement.
• High-strength performance offering 40,000 psi tensile strength and 20,000 psi shear strength for reliable load-bearing in demanding applications.
• Secure, tool-friendly installation with a hex socket drive and knurled head that prevents slipping during tightening.
• Superior thread engagement with a Class 3A UNC coarse thread fit, ensuring consistent, vibration-resistant fastening.
• Broad industry compliance meeting ASME B18.3 specifications and environmental standards like RoHS 3 and REACH for global use.

Professional Applications & Engineering Value

This 6061 aluminum shoulder screw is engineered to address common challenges in precision assemblies, such as misalignment and component wear. Its 3/8" shoulder length acts as a precise shaft for gears, bearings, or linkages, minimizing friction and providing a stable pivot point. The 10-24 UNC coarse thread with a Class 3A fit ensures quick assembly and high resistance to loosening under vibration, making it ideal for machinery, automation, and electronic enclosures. The hex socket drive and knurled head enhance grip during installation, reducing the risk of tool slippage and damage. Manufactured from high-strength aluminum, it offers an optimal balance of durability and weight savings, suitable for applications where both performance and material efficiency are critical.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC thread with a Class 3A fit for precise thread engagement. The shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 3/8" with a tolerance of -0.005" to 0.005", ensuring consistent dimensional accuracy. It is manufactured in compliance with ASME B18.3 standards and is RoHS 3 (2015/863/EU) compliant (with exemption 6(b)-II for lead in aluminum) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.