S-93516A720 1/2"-13 x 2" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance ideal for harsh marine and industrial environments, extending service life and reducing replacement costs
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity and structural integrity for demanding applications
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation under stress
• Fully threaded UNC coarse spacing delivers faster installation and superior holding power in a wide range of materials
• External hex drive design allows for high-torque installation with common tools, simplifying assembly and maintenance
• Compliance with RoHS 3 and REACH ensures environmental safety and meets stringent international regulatory standards
• ASME B18.2.1 specification compliance guarantees dimensional accuracy and interchangeability for professional engineering projects

Professional Applications & Engineering Value

Engineered for challenging environments, these 651 Silicon Bronze hex head screws solve critical corrosion and strength issues in marine applications, coastal structures, and chemical processing plants. The silicon bronze material offers exceptional resistance to saltwater corrosion and stress corrosion cracking, outperforming standard steel fasteners. With UNC coarse thread spacing and Class 2A thread fit, these screws provide rapid installation and secure fastening in wood, soft metals, and composite materials. The external hex drive accommodates high torque requirements during assembly, while the fully threaded design ensures maximum grip length and vibration resistance. These features make them ideal for permanent installations where maintenance access is limited and reliability is paramount.

Specification Summary & Compliance

This 1/2"-13 UNC hex head screw features Class 2A thread fit for standard clearance applications and precise dimensional tolerances. Manufactured to ASME B18.2.1 specifications ensuring consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted hazardous substances. The 2" length and coarse thread spacing provide optimal engagement for various material thicknesses while maintaining the specified 70,000 psi tensile strength and Rockwell B70 hardness throughout the fastener.