S-92620A893 7/8"-9 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 reliable performance in high-stress applications
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Optimized installation efficiency with external hex drive and coarse UNC threading for faster assembly
- Precise thread engagement with Class 2A fit ensuring consistent clamping force and vibration resistance
- Maximum thread coverage through full threading along the entire 1½" length for enhanced grip strength
- Heavy-duty material integrity with Grade 8 steel and Rockwell C33 hardness for superior durability
- Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for reliable interchangeability
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers critical engineering solutions for heavy machinery, structural steel connections, and industrial equipment assembly. The 7/8"-9 UNC coarse threading provides excellent engagement in thick materials and castings, while the external hex drive enables high-torque installation with standard tools. The zinc yellow-chromate plating creates a protective barrier against industrial corrosion, significantly extending maintenance intervals in manufacturing plants, construction sites, and marine environments. With 150,000 PSI tensile strength and Rockwell C33 hardness, these screws maintain structural integrity under extreme vibrational loads and dynamic stresses, making them ideal for critical bolted joints in automotive, mining, and heavy equipment applications where failure is not an option.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 7/8"-9 UNC coarse threads in right-hand orientation. Fully compliant with ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical properties. Meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for responsible manufacturing. The 1½" length provides optimal fastening depth for various industrial applications requiring high-strength connections.
