S-91247A819 5/8"-11 x 6 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 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 tensile strength with 120,000 PSI rating ensures reliable performance in high-stress industrial applications
- Superior corrosion resistance through zinc plating extends service life in demanding environments
- Precision Class 2A thread fit provides consistent engagement and reduces installation issues
- Rockwell C25 hardness maintains structural integrity under heavy loads and repeated use
- Partially threaded UNC coarse design offers optimal clamping force distribution for structural connections
- External hex drive compatibility with standard tools simplifies installation and maintenance procedures
- Comprehensive regulatory compliance including RoHS 3 and REACH ensures environmental and safety standards are met
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where structural integrity and corrosion resistance are paramount. The zinc plated steel construction provides essential protection against environmental degradation, while the 5/8"-11 UNC coarse thread design ensures rapid installation and superior vibration resistance in machinery, structural steel connections, and equipment assembly. The partially threaded configuration concentrates clamping force where needed most, preventing joint loosening in dynamic load conditions. Engineered to ASME B18.2.1 standards with SAE J429 Grade 5 certification, this fastener meets the rigorous demands of construction, manufacturing, and maintenance operations where failure is not an option.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 5/8"-11 UNC coarse thread specifications. Complies with ASME B18.2.1 dimensional standards and SAE J429 Grade 5 mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features Rockwell C25 hardness and 120,000 PSI tensile strength for guaranteed performance in inch system applications.
