S-91286A296 7/16"-20 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, ideal for high-stress industrial applications
- Superior corrosion resistance through zinc-flake coating, extending service life in harsh environments
- Precise thread engagement with Class 2A UNF fine threads ensuring reliable, vibration-resistant connections
- Optimized torque transmission via external hex drive design for efficient installation with standard tools
- Enhanced durability from Rockwell C33 hardness, maintaining structural integrity under repeated stress
- Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3 and REACH standards
- Versatile partial threading allowing both secure clamping and adjustable positioning capabilities
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws solve critical fastening challenges where vibration resistance and structural integrity are paramount. The 7/16"-20 UNF fine thread configuration provides superior holding power in materials prone to stripping, while the zinc-flake coated steel construction withstands corrosive environments common in manufacturing, construction, and machinery assembly. The partially threaded design allows for precise clamping force distribution, making these industrial fasteners ideal for equipment requiring both secure anchoring and adjustment capabilities. With their external hex drive and standardized dimensions, they enable rapid installation and maintenance in time-sensitive operations.
Specification Summary & Compliance
This 1-3/4" length fastener features Class 2A thread fit precision with UNF fine threading (7/16"-20) and Grade 8 strength classification. Manufactured to ASME B18.2.1 and SAE J429 specifications, the screw maintains dimensional accuracy and performance consistency. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries. The inch system measurements and standardized thread profile guarantee interchangeability with existing industrial equipment and components.
