S-91268A966 1"-8 x 5" 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 capability with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior wear and deformation resistance due to Rockwell C33 hardness, ensuring long-term fastener integrity
- Optimized for quick assembly with coarse UNC threads and external hex drive for efficient installation using standard tools
- Enhanced durability in industrial environments through high-strength steel construction and partial threading design
- Precise thread engagement with Class 2A thread fit for consistent clamping force and vibration resistance
- Compliance with rigorous industry standards including ASME B18.2.1 and SAE J429 for guaranteed quality and interoperability
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for sustainable procurement
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where structural integrity is paramount. The 1"-8 UNC coarse thread configuration provides superior resistance to vibrational loosening in machinery, construction, and transportation equipment. Manufactured from high-strength steel with Rockwell C33 hardness, these fasteners maintain clamping force under extreme loads while the partial threading design concentrates strength where needed most. The external hex drive enables high-torque installation for secure connections in industrial assembly scenarios, making them ideal for structural steel connections, heavy equipment maintenance, and infrastructure projects requiring 150,000 psi tensile strength reliability.
Specification Summary & Compliance
This 5" length hex head screw features 1"-8 UNC coarse threads with Class 2A thread fit tolerance for precise engagement. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 8 requirements, ensuring dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, providing assurance for regulated industries and sustainable procurement practices.
