S-92620A122 3/8"-32 x 1 1/4" 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
- Maximum load-bearing capability with 150,000 PSI tensile strength for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating that withstands harsh industrial environments
- Precise thread engagement with UNEF extra fine threads and Class 2A fit for vibration-resistant connections
- Exceptional durability backed by Grade 8 certification and Rockwell C33 hardness for long service life
- Optimal torque transmission via external hex drive design with 9/16" head width for secure installation
- Full-threaded coverage across the entire 1 1/4" length for maximum grip and load distribution
- Industry compliance assurance meeting ASME B18.2.1 and SAE J429 specifications for quality and reliability
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these Grade 8 hex head screws deliver exceptional performance where vibration resistance and high tensile strength are critical. The UNEF extra fine thread configuration provides superior holding power in thin materials and precision assemblies, while the zinc yellow-chromate plating offers enhanced corrosion protection for extended service life in challenging conditions. The external hex drive design ensures reliable torque application during installation, making these fully threaded screws ideal for heavy machinery, automotive systems, and structural applications requiring Class 2A thread fit precision. Their combination of material strength and corrosion resistance addresses common failure points in high-stress applications.
Specification Summary & Compliance
These 3/8"-32 hex head screws feature precise Class 2A thread fit tolerances and are manufactured to meet ASME B18.2.1 and SAE J429 specifications. The Grade 8 classification ensures consistent mechanical properties including 150,000 PSI tensile strength and Rockwell C33 hardness. The zinc yellow-chromate plating provides corrosion resistance while maintaining dimensional accuracy. All components comply with industry standards for dimensional consistency and performance reliability in industrial fastening applications.
