S-92800A289 5/8"-18 x 7 1/2" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• Superior mechanical strength with 80,000 PSI tensile strength and Rockwell B70 hardness for reliable, heavy-duty load-bearing.
• Precise and secure fastening ensured by the Class 2A thread fit and UNF fine thread profile, minimizing the risk of loosening under vibration.
• Optimized for high-torque applications with an external hex drive and robust hex head design for easy installation and removal with standard tools.
• Enhanced design flexibility with a partially threaded shank, allowing for unthreaded grip length where needed for specific assembly requirements.
• Long-term operational reliability supported by compliance with RoHS 3 and REACH environmental regulations, ensuring safety and sustainability.
• Broad compatibility with inch-system machinery and components, featuring a standard right-hand thread direction.

Professional Applications & Engineering Value

This 5/8"-18 UNF Hex Head Screw is engineered to solve critical challenges in demanding industrial settings. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor, marine, or chemical-exposed applications. Its 80,000 PSI tensile strength and Rockwell B70 hardness ensure it can withstand high stress and fatigue, preventing failure in structural assemblies, heavy machinery, and construction projects. The UNF fine thread and Class 2A fit offer superior vibration resistance and clamping force compared to coarse threads, which is vital for automotive, aerospace, and precision equipment. The external hex drive and 7 1/2" length facilitate easy installation in deep or hard-to-reach areas, while the partial threading allows for precise grip length control, reducing the need for custom fasteners and streamlining inventory for B2B procurement.

Specification Summary & Compliance

This screw adheres to inch system measurements with a 5/8"-18 UNF thread size and Class 2A thread fit, ensuring dimensional accuracy and interchangeability. It is manufactured to meet industry standards for external hex drive and right-hand thread configurations. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial and international markets.