S-93516A151 3/8"-16 x 5 1/2" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in marine and harsh chemical environments
• High tensile strength of 70,000 PSI ensures reliable load-bearing capacity in demanding applications
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• External hex drive design allows for easy installation and high torque application with standard tools
• Coarse UNC threading with Class 2A fit enables quick assembly and secure fastening in various materials
• Full threading along the 5½" length offers maximum grip and adjustment flexibility
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental responsibility

Professional Applications & Engineering Value

This 651 Silicon Bronze hex head screw is specifically engineered to address the critical challenges of marine environments and industrial settings where corrosion is a major concern. The silicon bronze alloy provides inherent resistance to saltwater corrosion, eliminating the risk of premature failure that plagues standard steel fasteners. With its 3/8"-16 UNC coarse thread and Class 2A fit, it ensures rapid installation and reliable performance in wood, composite materials, and softer metals commonly used in boat building, offshore structures, and chemical processing equipment. The external hex drive and fully threaded design make it ideal for applications requiring both high clamping force and ease of maintenance, providing engineers with a durable, long-lasting corrosion resistant fastening solution that reduces replacement frequency and maintenance costs.

Specification Summary & Compliance

This hex head screw features a 3/8"-16 UNC coarse thread with Class 2A dimensional accuracy ensuring proper fit and interchangeability. Manufactured to meet ASME B18.2.1 specifications for dimensional standards and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for hazardous substances.