S-93516A201 1/2"-20 x 2" ASME B18.2.1 Bronze Hex Head Screws
Bronze Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance for extended service life in harsh marine and industrial environments
- High tensile strength of 70,000 psi provides reliable load-bearing capacity and structural integrity
- Rockwell B70 hardness ensures excellent wear resistance and durability under mechanical stress
- Fine UNF thread pattern (1/2"-20) delivers enhanced vibration resistance and superior holding power
- Class 2A thread fit guarantees precise, consistent installation and compatibility with standard nuts
- External hex drive design allows for high-torque application with common tools, reducing installation time
- Full threading along the 2" length enables maximum adjustability and secure fastening in various material thicknesses
Professional Applications & Engineering Value
Engineered for demanding environments, these 651 Silicon Bronze hex head screws provide critical corrosion protection where standard steel fasteners fail. The UNF fine thread configuration maintains clamp force under vibration, making them ideal for marine equipment, chemical processing installations, and coastal structures. With 70,000 psi tensile strength and Rockwell B70 hardness, they withstand both mechanical stress and galvanic corrosion in saltwater applications. The external hex drive facilitates quick installation in confined spaces while the fully threaded design ensures consistent engagement across varying material thicknesses. These screws solve corrosion-induced failure problems while maintaining structural integrity in critical industrial and marine fastening applications.
Specification Summary & Compliance
This 1/2"-20 UNF hex head screw features Class 2A thread fit for precision tolerance and interchangeability. Manufactured to ASME B18.2.1 dimensional standards with fully threaded configuration. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications. The 651 Silicon Bronze material provides consistent mechanical properties meeting specified 70,000 psi tensile strength and Rockwell B70 hardness requirements.
