S-93516A539 1/4"-20 x 5/8" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for long-lasting performance in harsh marine and industrial environments
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity
• Rockwell B70 hardness provides excellent wear resistance and durability under stress
• External hex drive design allows for easy installation and removal with standard tools
• Class 2A thread fit with UNC coarse threading offers quick assembly and reliable engagement
• Full threading along the 5/8" length maximizes grip and fastening versatility
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental standards

Professional Applications & Engineering Value

Engineered for demanding environments, these 651 Silicon Bronze hex head screws deliver exceptional corrosion resistance, making them ideal for marine applications, chemical processing, and coastal infrastructure where saltwater and moisture are prevalent. The 1/4"-20 UNC coarse thread design ensures rapid installation and secure fastening in wood, metal, and composite materials, reducing assembly time while maintaining 70,000 psi tensile strength. The external hex drive provides superior torque transmission, minimizing strip-out risks. These fully threaded screws offer consistent clamping force across the entire 5/8" length, addressing vibration loosening and material fatigue in industrial equipment and structural frameworks.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. Manufactured in compliance with ASME B18.2.1 for consistent quality and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting strict environmental and safety regulations for hazardous substances.