S-93516A197 1/2"-20 x 1" 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 industrial environments
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and stress
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• UNF fine threading with Class 2A fit delivers precise, secure fastening with reduced risk of loosening
• External hex drive design allows for easy installation and removal with standard tools
• Full threading along the 1" length maximizes grip and load distribution across the entire fastener
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and industrial usability

Professional Applications & Engineering Value

These 651 Silicon Bronze hex head screws are engineered to solve critical challenges in demanding applications, particularly where corrosion resistance is paramount. The silicon bronze material offers exceptional performance in marine environments, chemical processing, and coastal infrastructure, preventing failure due to rust and degradation. The UNF fine threading and Class 2A thread fit provide superior clamping force and vibration resistance, reducing maintenance needs in machinery, offshore equipment, and structural assemblies. With an external hex drive and full threading, these screws ensure quick, secure installations in tight spaces, enhancing efficiency for industrial maintenance and OEM projects.

Specification Summary & Compliance

This 1/2"-20 UNF hex head screw features a Class 2A thread fit for precise dimensional accuracy and interchangeability. It is manufactured in compliance with ASME B18.2.1 standards, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, confirming its suitability for regulated industrial and environmental applications without hazardous substances.