S-97768A446 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments.
• Superior strength and durability with a tensile strength of 70,000 psi and minimum shear strength of 35,000 psi for heavy-duty applications.
• Precise assembly and alignment thanks to the Class 3A thread fit and standard shoulder fit, ensuring reliable performance.
• Secure, non-slip fastening enabled by the knurled head and 1/4" hex drive, allowing for high-torque installation.
• Broad compatibility with 3/8"-16 UNC coarse threads, meeting ASME B18.3 standards for consistent quality.
• Environmental and regulatory compliance with RoHS 3 and REACH, ensuring safe use in various industries.
• Optimized for repetitive use with a Rockwell B55 hardness, providing long-lasting wear resistance.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in industrial and mechanical assemblies, where precise alignment and robust fastening are essential. Made from 18-8 stainless steel with a black oxide finish, it offers excellent resistance to corrosion and wear, making it suitable for demanding environments like machinery, automotive, and aerospace. The Class 3A thread fit and coarse UNC threads ensure quick, secure installation, reducing assembly time and minimizing the risk of cross-threading. The knurled head and 1/4" hex drive provide a firm grip for high-torque applications, preventing slippage and enhancing operator safety. Ideal for use in pivots, guides, and rotating components, this shoulder screw delivers reliable performance, extended service life, and compliance with industry standards, ultimately lowering maintenance costs and improving operational efficiency.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a thread size of 3/8"-16 UNC with Class 3A thread fit for high accuracy. The shoulder diameter is 1/2" with a tolerance of -0.004" to -0.002", and shoulder length is 2 1/2" with a tolerance of -0.005" to 0.005", ensuring consistent performance. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and adherence to global standards.