S-92620A649 3/8"-24 x 1 3/4" 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
- Exceptional load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh environments
- Precision fine threading (3/8"-24 UNF) provides enhanced vibration resistance and secure fastening integrity
- Maximum thread engagement with full threading along the entire 1 3/4" length for optimal grip strength
- Industry-leading hardness at Rockwell C33 ensures minimal wear and deformation under repeated use
- Standard-compliant manufacturing meeting ASME B18.2.1 and SAE J429 specifications for guaranteed interchangeability
- Optimized drive efficiency with external hex head design for high-torque installation and removal
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The 3/8"-24 UNF fine thread pattern maintains clamping force under extreme vibration, making them ideal for heavy machinery, structural assemblies, and automotive systems. The zinc yellow-chromate plating provides superior corrosion resistance in environments exposed to moisture and chemicals, while the Class 2A thread fit ensures smooth installation without compromising strength. With fully threaded design and 150,000 psi tensile strength, these fasteners solve critical challenges in construction, manufacturing, and equipment maintenance where reliability and durability are paramount.
Specification Summary & Compliance
This Grade 8 hex head screw features precision 3/8"-24 UNF fine threads with Class 2A fit for consistent engagement and reliable performance. Manufactured to exacting ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The fastener meets industry standards for high-strength applications with verified 150,000 psi tensile strength and Rockwell C33 hardness. The zinc yellow-chromate plating provides corrosion protection while maintaining compliance with industrial fastener requirements for quality and performance consistency.
