S-92620A587 5/16"-18 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 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 load-bearing capacity with 150,000 psi tensile strength for demanding industrial applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Optimal torque transmission through external hex drive design, ensuring secure installation and removal
- Reliable thread engagement with Class 2A UNC coarse threads for quick assembly and vibration resistance
- Maximum thread coverage with fully threaded design, providing consistent clamping force along entire length
- Premium material performance from Grade 8 steel with Rockwell C33 hardness for durability under stress
- Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance in heavy machinery, construction equipment, and automotive assemblies where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction protects against environmental degradation while maintaining dimensional stability. The 5/16"-18 UNC coarse thread design ensures rapid installation and superior vibration resistance in high-stress applications. The external hex drive provides excellent torque transmission for secure fastening in confined spaces. Engineered for structural connections, industrial machinery, and equipment manufacturing, these fully threaded fasteners maintain integrity under extreme mechanical loads and harsh operating conditions.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread specifications. Complies with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features right-hand thread direction and fully threaded design with 1½" length for consistent performance across industrial applications.
