S-97381A303 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Lightweight yet durable construction using 6061 Aluminum for excellent strength-to-weight ratio and corrosion resistance in demanding environments.
• Precision Class 3A thread fit ensures smooth, reliable engagement and reduces the risk of cross-threading during assembly.
• High tensile strength of 40,000 PSI provides reliable clamping force and structural integrity for critical applications.
• Knurled socket head with 1/8" hex drive offers superior grip and prevents tool slippage, enabling secure and efficient installation.
• Standardized UNC coarse thread allows for faster assembly and disassembly compared to fine-thread alternatives.
• Comprehensive compliance with ASME B18.3, RoHS 3, and REACH ensures material quality and environmental safety for global supply chains.
• Robust shoulder design acts as a precise pivot, bearing surface, or location dowel, enhancing component alignment and reducing wear.

Professional Applications & Engineering Value

This 6061 Aluminum Shoulder Screw is engineered to solve common industrial challenges like component misalignment, pivot point wear, and the need for lightweight yet strong fastening solutions. The 10-24 UNC coarse thread and Class 3A fit provide quick, secure fastening in assemblies requiring frequent adjustments, such as in machinery, automation systems, and precision instruments. The knurled socket head with a 1/8" hex drive ensures tool engagement remains firm, reducing installation errors. Its 3/8" shoulder length and specific diameter tolerances allow it to function as an accurate spacer or rotational axis, minimizing friction and extending the service life of moving parts in industrial applications. Made from aluminum, it is ideal where weight reduction is critical without sacrificing the 40,000 psi tensile strength needed for reliable performance.

Specification Summary & Compliance

This shoulder screw features a 10-24 UNC thread with Class 3A fit for precision threading. The shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 1/2" with a tolerance of -0.005" to 0.005", ensuring exact dimensional control. It is manufactured in compliance with ASME B18.3 standards and is RoHS 3 (2015/863/EU) compliant under exemption 6(b)-II and REACH (EC 1907/2006) compliant, meeting stringent environmental and safety regulations for industrial use.