S-92620A637 3/8"-16 x 1 1/8" 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 capacity with 150,000 psi tensile strength and Grade 8 classification for critical structural applications
- Enhanced corrosion resistance through zinc yellow-chromate plating, extending service life in harsh industrial environments
- Superior hardness and durability with Rockwell C33 rating to prevent stripping and maintain fastener integrity under stress
- Reliable coarse threading using UNC 3/8"-16 threads for faster installation and reduced cross-threading risks
- Precise Class 2A thread fit ensuring consistent engagement and vibration resistance in assembled components
- Full-length threading providing maximum grip length and flexibility for various material thicknesses
- Standard-compliant design meeting ASME B18.2.1 and SAE J429 specifications for quality assurance and interchangeability
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The steel construction combined with zinc yellow-chromate plating creates a robust barrier against corrosion in manufacturing equipment, construction machinery, and automotive assemblies. The UNC coarse thread design ensures rapid installation in high-volume production environments while maintaining Class 2A thread fit precision for vibration-prone applications. With fully threaded coverage and external hex drive configuration, these fasteners provide maximum clamping force and easy installation using standard tools, making them ideal for structural frameworks, heavy machinery, and equipment requiring 150,000 psi tensile strength reliability.
Specification Summary & Compliance
Manufactured to exacting ASME B18.2.1 and SAE J429 standards, these hex head screws feature Class 2A thread fit tolerances for consistent performance. The 3/8"-16 UNC coarse thread maintains proper engagement while the zinc yellow-chromate plating provides corrosion protection. All dimensional specifications including 1 1/8" length, 9/16" head width, and 1/4" head height adhere to industrial standards for reliable interchangeability and assembly compatibility.
