S-97345A834 5/8"-11 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Enhanced assembly precision through Class 3A thread fit, ensuring tight tolerances and reliable, vibration-resistant connections.
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding, heavy-duty applications.
• Secure and easy installation with a 3/8" hex socket drive and knurled head, providing excellent grip and torque transmission.
• Optimized for high-load scenarios featuring a 1" diameter shoulder for precise component alignment and bearing support.
• Broad compatibility with 5/8"-11 UNC coarse threads, facilitating quick assembly and disassembly in various machinery.
• Regulatory compliance assurance meeting ASME B18.3 standards and RoHS 3/REACH regulations for safe, global use.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy equipment. Its Class 3A thread fit and UNC coarse threads ensure minimal backlash and superior load distribution, reducing the risk of loosening under dynamic stresses. The knurled socket head enhances grip during installation, even in oily conditions, while the robust shoulder provides exact alignment for rotating parts like gears and pulleys. With a Rockwell B79 hardness and high tensile strength, it withstands repetitive loads and corrosive environments, making it ideal for industrial applications requiring durability and reliability. This fastener simplifies maintenance and boosts assembly efficiency in sectors from manufacturing to marine engineering.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with precise dimensions including a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". The Class 3A thread fit and UNC coarse thread design ensure high accuracy and interchangeability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), guaranteeing environmental safety and regulatory acceptance for global supply chains.