S-91286A202 3/8"-16 x 1 1/8" 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 tensile strength of 150,000 psi ensures reliable performance in high-stress industrial applications, reducing failure risks.
- Superior corrosion resistance from the zinc-flake coating extends service life in harsh environments, minimizing maintenance needs.
- High hardness rating (Rockwell C33) provides excellent wear resistance, maintaining structural integrity under repeated loads.
- Coarse UNC threading with Class 2A fit allows for quick installation and secure fastening in heavy-duty assemblies.
- Full threading design offers consistent grip along the entire length, enhancing load distribution and joint stability.
- External hex drive and hex head enable easy tightening with standard tools, improving assembly efficiency.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability in engineering projects.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in demanding sectors like construction, machinery, and automotive assembly. The steel material combined with a zinc-flake coating provides robust protection against corrosion and abrasion, essential for outdoor or high-moisture environments. Its coarse UNC thread and Class 2A fit ensure rapid, secure fastening in heavy-duty applications, reducing installation time while preventing loosening under vibration. With a tensile strength of 150,000 psi and full threading, it distributes loads evenly, making it ideal for structural connections where reliability is paramount. This fastener meets rigorous industry standards, offering peace of mind for engineers focused on durability and compliance.
Specification Summary & Compliance
This product adheres to precise dimensional tolerances, including a Class 2A thread fit and UNC thread standards, ensuring compatibility and performance. It conforms to ASME B18.2.1 and SAE J429 specifications for consistent manufacturing quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global supply chains.
