S-93516A209 5/8"-11 x 3 1/2" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance for long-lasting performance in marine and harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications
• Rockwell B70 hardness provides superior durability and resistance to deformation under stress
• Fully threaded UNC coarse spacing design enables faster installation and superior grip in various materials
• Class 2A thread fit guarantees precise, consistent engagement while allowing for easy assembly
• External hex drive design offers secure tool engagement and high torque capability during installation
• Compliance with major industry standards including ASME B18.2.1 ensures dimensional accuracy and reliability

Professional Applications & Engineering Value

Engineered for demanding marine and industrial environments, these 651 Silicon Bronze hex head screws deliver exceptional performance where corrosion resistance is critical. The silicon bronze material composition provides superior protection against saltwater corrosion and chemical exposure, making them ideal for marine hardware, coastal structures, and chemical processing facilities. The UNC coarse thread spacing ensures rapid installation and reliable holding power in both soft and hard materials, while the external hex drive accommodates high-torque applications without stripping. With full threading along the 3-1/2" length, these fasteners offer maximum adjustability and secure fastening in thick materials or assemblies requiring deep penetration. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these screws maintain structural integrity under heavy loads and vibration, providing long-term reliability in critical applications.

Specification Summary & Compliance

This 5/8"-11 UNC hex head screw features Class 2A thread fit for precise dimensional accuracy and easy assembly. Manufactured to ASME B18.2.1 specifications for consistent quality and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substance restrictions. The inch system measurement ensures compatibility with North American industrial standards and specifications.