S-92865A881 7/8"-9 x 2 1/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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
- Superior load-bearing capacity with 120,000 psi tensile strength, ideal for heavy-duty structural connections
- Enhanced corrosion resistance through zinc plating, extending service life in harsh industrial environments
- Reliable thread engagement with Class 2A fit UNC coarse threads, preventing cross-threading and ensuring consistent clamping force
- High torque application capability due to Grade 5 hardness (Rockwell C25) and external hex drive design
- Full-threaded design providing maximum grip length and uniform stress distribution across the entire fastener
- Standard compliance assurance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
- Environmental regulation adherence with RoHS 3 and REACH compliance for safe global sourcing
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical performance in demanding industrial applications where vibration resistance and structural integrity are paramount. The zinc plated steel construction provides essential corrosion protection for machinery, structural steel connections, and heavy equipment assembly. The 7/8"-9 UNC coarse threading enables rapid installation in thick materials while maintaining Class 2A thread fit precision for consistent clamping force. The external hex drive accommodates high torque applications, making it ideal for construction, manufacturing, and maintenance operations requiring high-strength fastening solutions that withstand extreme mechanical stress without compromising performance.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit tolerance per UNC standards with 7/8"-9 coarse threading and 2 1/4" length. Manufacturing complies with ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and mechanical properties. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for hazardous substances.
