S-93516A585 5/16"-18 x 1 1/4" 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 from 651 Silicon Bronze material for long-lasting performance in harsh environments
- High tensile strength of 70,000 PSI ensures reliable load-bearing capacity for demanding industrial applications
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
- External hex drive design allows for easy installation and removal with standard tools
- Class 2A thread fit guarantees precise, reliable engagement with mating components
- Full threading along the entire 1-1/4" length enables maximum grip and holding power
- Coarse UNC thread pattern facilitates quick assembly and disassembly in various materials
Professional Applications & Engineering Value
This 5/16"-18 UNC silicon bronze hex head screw delivers exceptional engineering value in corrosive environments where standard steel fasteners would fail. The 651 silicon bronze material offers outstanding resistance to saltwater, chemicals, and atmospheric corrosion, making it ideal for marine equipment, chemical processing plants, and coastal infrastructure. The combination of 70,000 PSI tensile strength and Rockwell B70 hardness ensures reliable performance under mechanical stress while the external hex drive provides secure tool engagement for precise torque application. These fully threaded screws with coarse UNC threading are engineered for rapid installation in wood, metal, and composite materials, reducing assembly time while maintaining structural integrity in demanding industrial applications.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 5/16"-18 UNC coarse threading and right-hand thread direction. Manufactured to exacting ASME B18.2.1 standards with dimensions of 1-1/4" length, 13/64" head height, and 1/2" head width. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while meeting international quality and safety requirements.
