S-92620A614 5/16"-24 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
- Maximum load-bearing capability with 150,000 psi tensile strength for critical structural applications
- Superior corrosion resistance through zinc yellow-chromate plating in harsh industrial environments
- Enhanced thread engagement with UNF fine threading providing superior vibration resistance
- Precise installation control with Class 2A thread fit ensuring consistent torque values
- Exceptional durability from Rockwell C33 hardness for long-term performance under stress
- Reliable fastening solutions meeting ASME B18.2.1 and SAE J429 specifications for quality assurance
- Full-threaded design offering maximum grip length and versatile application options
Professional Applications & Engineering Value
These Grade 8 steel hex head screws deliver exceptional engineering value in demanding industrial environments where fastener failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness ensures reliable performance in heavy machinery, structural steel connections, and high-vibration equipment. The UNF fine threading provides superior resistance to loosening under dynamic loads, while the zinc yellow-chromate plating offers enhanced protection against corrosion in outdoor or chemically aggressive settings. The external hex drive design allows for high-torque installation, making these fully threaded screws ideal for construction, manufacturing, and automotive applications where consistent clamping force is critical.
Specification Summary & Compliance
This 5/16"-24 x 3" hex head screw features precision Class 2A thread fit with UNF fine threading and right-hand thread direction. Manufactured to exacting standards including ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and performance reliability. The fastener meets industry standards for Grade 8 strength classification with verified mechanical properties including tensile strength and hardness ratings. Compliance with industrial quality requirements makes these screws suitable for regulated applications across multiple sectors.
