S-91268A371 7/16"-14 x 2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws
High-Strength Grade 8 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 load-bearing capacity with 150,000 psi tensile strength for critical structural applications
- Superior wear resistance due to Rockwell C33 hardness, extending service life in demanding environments
- Reliable fastening performance through Class 2A thread fit ensuring consistent engagement and vibration resistance
- Optimized installation efficiency with coarse UNC threading and external hex drive for quick assembly
- Enhanced joint stability through partial threading design that concentrates strength where needed most
- Industry-standard compatibility meeting ASME B18.2.1 specifications for interchangeability and quality assurance
- Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, construction equipment, and industrial assembly applications where failure is not an option. The 7/16"-14 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling rapid installation in thick materials. Manufactured from high-strength steel with Rockwell C33 hardness, these fasteners withstand extreme mechanical stresses and repetitive loading cycles. The partially threaded design concentrates tensile strength in the shank while allowing precise clamp load distribution. Ideal for structural connections in manufacturing equipment, automotive frames, and heavy-duty infrastructure projects requiring 150,000 psi tensile strength and reliable performance under dynamic loads.
Specification Summary & Compliance
This 2" length hex head screw features precision Class 2A thread fit tolerances with 7/16"-14 UNC coarse threading and right-hand thread direction. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 8 requirements, ensuring dimensional accuracy and mechanical performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for use in regulated industries and international markets.
