S-94967A442 5/16"-18 x 3/4" 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
- Exceptional corrosion resistance with black protective coating, extending service life in harsh environments and reducing maintenance costs
- High tensile strength of 120,000 PSI ensures reliable performance under heavy loads and vibration, minimizing failure risks
- Rockwell C25 hardness provides superior wear resistance, maintaining thread integrity through repeated installations
- Class 2A thread fit with UNC coarse threading enables quick assembly and secure fastening in various materials
- Full threading along the 3/4" length offers maximum grip and adjustment flexibility in deep applications
- External hex drive design allows for high-torque installation using standard tools, improving efficiency
- Compliance with major industry standards including ASME B18.2.1, ASTM B117, and SAE J429 ensures consistent quality and interoperability
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these Grade 5 hex head screws combine black corrosion-resistant steel construction with 120,000 PSI tensile strength to solve critical fastening challenges. The fully threaded UNC coarse thread design provides superior holding power in structural assemblies, machinery, and equipment where vibration resistance is paramount. With Rockwell C25 hardness, these fasteners withstand repeated disassembly without thread deformation, making them ideal for maintenance-intensive applications. The external hex drive accommodates high torque values for secure installations in automotive, construction, and manufacturing sectors where reliability cannot be compromised.
Specification Summary & Compliance
This 5/16"-18 x 3/4" hex head screw features Class 2A thread fit per UNC standards with precise dimensional accuracy. Manufacturing complies with ASME B18.2.1 for hex bolts, ASTM B117 for salt spray testing, and SAE J429 for Grade 5 mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.
