S-91247A684 7/16"-14 x 3 3/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional load-bearing capability with 120,000 PSI tensile strength, ideal for heavy-duty structural applications
- Superior corrosion resistance from zinc plating, extending service life in harsh industrial environments
- Reliable thread engagement with Class 2A thread fit and UNC coarse threading for vibration resistance
- Optimized torque transmission through external hex drive design, preventing tool slippage during installation
- Controlled thread distribution via partial threading for precise clamping force in multi-material assemblies
- Consistent mechanical performance guaranteed by Rockwell C25 hardness and Grade 5 certification
- Global compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards
Professional Applications & Engineering Value
Engineered for demanding industrial fastening, this Grade 5 steel hex head screw solves critical challenges in heavy machinery, structural steelwork, and equipment manufacturing. The 7/16"-14 UNC coarse thread configuration maintains grip strength under dynamic loads, while the zinc plated finish provides essential corrosion protection in outdoor or high-moisture environments. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening in vibration-prone applications. With external hex drive compatibility and standardized dimensions, it enables efficient installation using common torque tools, reducing assembly time in industrial maintenance and production lines.
Specification Summary & Compliance
This hex head screw maintains Class 2A thread fit tolerances per UNC standards with precise 3 3/4" length and 1 1/8" minimum thread length. Manufacturing complies with ASME B18.2.1 and SAE J429 specifications for dimensional accuracy. The fastener is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental regulatory adherence for global industrial distribution.
