S-93516A131 5/16"-18 x 4 1/2" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 651 Silicon Bronze material, ideal for marine and harsh industrial environments, reducing maintenance costs and extending service life.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads, preventing failures in critical applications.
• Rockwell B70 hardness provides excellent durability and wear resistance, maintaining integrity in demanding conditions.
• Fully threaded UNC coarse spacing allows for quick installation and secure fastening, minimizing assembly time and improving efficiency.
• External hex drive design offers easy tool engagement and high torque application, facilitating straightforward installation and removal.
• Compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability, ensuring consistent quality and fit.
• RoHS 3 and REACH compliant for environmental safety and regulatory adherence, supporting sustainable and responsible manufacturing practices.

Professional Applications & Engineering Value

This 5/16"-18 UNC 4 1/2" 651 Silicon Bronze hex head screw is engineered to address common challenges in corrosive and high-stress environments, such as marine, chemical processing, and offshore industries. The silicon bronze material offers exceptional resistance to saltwater and atmospheric corrosion, reducing the risk of degradation and costly replacements. With a coarse thread spacing and Class 2A thread fit, it ensures easy alignment and secure connections in applications where vibration and dynamic loads are concerns. The fully threaded design and external hex drive enable efficient installation with standard tools, saving time in assembly and maintenance. By meeting ASME B18.2.1 specifications, it provides reliable performance in structural and heavy-duty fastening, enhancing safety and longevity in professional settings.

Specification Summary & Compliance

This screw features precise dimensions including a 5/16"-18 UNC thread size with coarse spacing and Class 2A thread fit for consistent accuracy. It adheres to ASME B18.2.1 manufacturing standards, ensuring reliable performance and interchangeability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.