S-92620A142 3/8"-16 x 7 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 reliable performance in high-stress assemblies.
- Superior corrosion resistance due to zinc yellow-chromate plating, extending service life in harsh industrial environments.
- High-strength Grade 8 classification and Rockwell C33 hardness for consistent durability and resistance to wear.
- Optimized partial threading with UNC coarse thread design for faster installation and secure fastening in various materials.
- Precise Class 2A thread fit ensures smooth assembly and reduces the risk of cross-threading.
- External hex drive compatibility allows for easy tightening with standard tools, improving installation efficiency.
- Compliance with ASME B18.2.1 and environmental standards guarantees quality and safe use in regulated industries.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors where high tensile strength and corrosion resistance are paramount. The steel material combined with zinc yellow-chromate plating provides a robust barrier against rust and chemical exposure, reducing maintenance costs. Its 3/8"-16 UNC coarse thread and partial threading enhance grip in coarse-grained materials, preventing loosening under vibration. By meeting ASME B18.2.1 standards, it ensures dimensional accuracy and reliability, making it ideal for structural bolting, equipment frames, and other demanding industrial applications that require long-term performance and safety.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit for precise dimensional tolerance under the UNC thread standard. It conforms to ASME B18.2.1 and SAE J429 manufacturing specifications, ensuring consistent quality. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, supporting safe and sustainable usage.
