S-90002A118 3/8"-16 x 2" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification
High-Strength Steel Hex Head Screws with Material Certification
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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 demanding industrial applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Enhanced durability through Rockwell C33 hardness, maintaining structural integrity under heavy stress
- Reliable thread engagement with UNC coarse thread pattern and Class 2A fit for secure fastening in various materials
- Easy installation and removal using standard external hex drive tools for efficient maintenance operations
- Full thread coverage along the 2-inch length for maximum grip and distribution of clamping force
- Compliance with industry standards including ASME B18.2.1 and SAE J429 for guaranteed quality and interchangeability
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The combination of high-strength steel material and zinc yellow-chromate plating addresses common failure points in corrosive or high-vibration environments. The UNC coarse thread design ensures rapid installation and superior resistance to loosening, while the external hex drive provides reliable torque transmission during tightening. These fully threaded screws maintain consistent clamping force across the entire 2-inch length, making them ideal for applications requiring uniform stress distribution and maximum joint integrity in construction, automotive, and manufacturing sectors.
Specification Summary & Compliance
This heavy-duty hex head screw features precise 3/8"-16 UNC coarse threads with Class 2A thread fit tolerance for consistent performance. Manufacturing complies with ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The fastener meets industry standards for Grade 8 strength classification with verified 150,000 PSI tensile strength and Rockwell C33 hardness. The zinc yellow-chromate plating provides corrosion protection while maintaining the screw's structural integrity.
