S-91268A379 7/16"-14 x 3" 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 capability with 150,000 psi tensile strength for critical structural applications
- Superior wear resistance achieved through Rockwell C33 hardness for extended service life
- Optimized thread engagement with partial threading design providing enhanced clamping force
- Precision thread compatibility through Class 2A fit ensuring reliable assembly in UNC coarse thread applications
- Heavy-duty construction meeting ASME B18.2.1 and SAE J429 specifications for industrial reliability
- Secure installation facilitated by external hex drive design for high-torque applications
- Environmental compliance with RoHS 3 and REACH regulations for global manufacturing use
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these Grade 8 hex head screws deliver exceptional performance in heavy machinery, structural steel connections, and high-vibration equipment. The 7/16"-14 UNC coarse thread configuration provides superior resistance to loosening under dynamic loads, while the partial threading design concentrates clamping force where needed most. The steel construction with Rockwell C33 hardness ensures durability against wear and corrosion in challenging conditions. These hex head screws are particularly valuable in construction, automotive, and manufacturing applications where high tensile strength and reliable fastening are critical for operational safety and equipment longevity.
Specification Summary & Compliance
This 3" length hex head screw features precision Class 2A thread fit with 7/16"-14 UNC coarse threads and right-hand thread direction. Manufactured to ASME B18.2.1 specifications and SAE J429 Grade 8 standards, ensuring dimensional accuracy and mechanical performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for international industrial applications requiring strict material compliance.
