S-93516A212 5/8"-11 x 4 1/2" 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 environments like marine and chemical applications
- High tensile strength of 70,000 PSI ensures reliable performance under heavy loads and structural stress
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
- Coarse UNC threading with Class 2A fit offers faster installation and superior vibration resistance
- External hex drive design allows for high-torque tightening with standard tools
- Full threading along the 4-1/2" length enables maximum grip and adjustability in various material thicknesses
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental responsibility
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 651 Silicon Bronze hex head screws deliver exceptional performance where corrosion is a primary concern. The marine-grade bronze alloy provides natural resistance to saltwater corrosion, making them ideal for shipbuilding, offshore platforms, and coastal infrastructure. Their 70,000 PSI tensile strength and Rockwell B70 hardness ensure they maintain integrity under constant stress and vibration in heavy machinery, structural connections, and piping systems. The coarse UNC thread spacing with Class 2A fit prevents loosening in dynamic applications while enabling quick assembly. These fully threaded screws with external hex drive are specified by engineers for their reliability in chemical processing, water treatment, and marine engineering projects where failure is not an option.
Specification Summary & Compliance
This 5/8"-11 UNC hex head screw features precise Class 2A thread fit per ASME B18.2.1 standards, ensuring dimensional accuracy and interchangeability. Manufacturing complies with ASME B18.2.1 specifications for hexagonal bolts, with full traceability. The product is RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) requirements, confirming adherence to strict environmental and safety regulations for hazardous substances.
