S-94967A427 5/16"-18 x 1/2" ASME B18.2.1, ASTM B117, 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
- Superior corrosion protection with black corrosion-resistant coating extends service life in harsh environments
- High-strength Grade 5 rating delivers 120,000 psi tensile strength for demanding industrial applications
- Precise Class 2A thread fit ensures smooth installation and reliable fastening performance
- External hex drive design provides excellent torque transmission and tool accessibility
- Full threading configuration offers maximum grip strength along the entire fastener length
- Comprehensive compliance with ASME, ASTM, and SAE standards guarantees engineering reliability
- Environmental regulation adherence through RoHS 3 and REACH compliance for global market acceptance
Professional Applications & Engineering Value
These Grade 5 hex head screws with black corrosion-resistant coating provide critical solutions for industrial applications where both strength and environmental durability are paramount. The 5/16"-18 UNC coarse thread design ensures rapid installation and superior vibration resistance in machinery, structural assemblies, and heavy equipment. The external hex drive facilitates high-torque applications while the fully threaded configuration maximizes load distribution. Engineered to withstand corrosive conditions while maintaining Rockwell C25 hardness, these screws prevent premature failure in manufacturing, construction, and automotive applications where corrosion-resistant fasteners are essential for long-term structural integrity.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 5/16"-18 UNC coarse thread specifications and 1/2" length. Manufacturing complies with ASME B18.2.1, ASTM B117 salt spray testing, and SAE J429 Grade 5 standards. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for industrial use worldwide.
