S-92865A621 3/8"-16 x 5/8" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel 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
- Exceptional strength for demanding applications with Grade 5 classification and 120,000 psi tensile strength, ensuring reliable performance under high stress.
- Superior corrosion resistance from the zinc plating, extending the service life of the fastener in various industrial environments.
- Optimized for quick assembly thanks to the coarse UNC thread and external hex drive, allowing for efficient installation with common tools.
- Consistent and precise fit with Class 2A thread fit, reducing the risk of cross-threading and ensuring secure connections.
- Enhanced durability from Rockwell C25 hardness, providing excellent resistance to wear and deformation.
- Full threading for maximum grip along the entire 5/8" length, offering versatile fastening in a wide range of material thicknesses.
- Compliance with major industry standards including ASME B18.2.1 and SAE J429, guaranteeing quality and interoperability.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address critical fastening challenges in heavy-duty industrial applications. The zinc plated steel construction combats corrosion, a common failure point in harsh environments, while the 3/8"-16 UNC coarse thread and external hex drive facilitate rapid installation and high clamp force, reducing assembly time and labor costs. Its 120,000 psi tensile strength and Rockwell C25 hardness ensure the fastener maintains integrity in high-vibration settings, such as machinery, construction, and automotive assemblies, preventing loosening and structural compromises. This combination of material properties and design makes it a reliable choice for engineers seeking durable, high-performance fastening solutions.
Specification Summary & Compliance
This screw adheres to precise dimensional standards with a Class 2A thread fit and is manufactured to meet ASME B18.2.1 and SAE J429 Grade 5 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in regulated markets.
