S-91247A243 3/8"-24 x 6" ASME B18.2.1, 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
- High tensile strength of 120,000 PSI ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Zinc plating provides excellent corrosion resistance, extending the service life of the screw in various environments.
- Grade 5 steel construction with Rockwell C25 hardness offers a durable and robust solution for heavy-duty industrial use.
- 3/8"-24 UNF fine threading and Class 2A thread fit deliver precise, secure connections with reduced vibration loosening.
- Partially threaded design allows for effective clamping force distribution, ideal for assemblies requiring unthreaded shank sections.
- External hex drive enables easy installation and removal with standard tools, improving assembly efficiency.
- Compliance with ASME B18.2.1 and SAE J429 ensures consistent quality and interchangeability in professional settings.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered for robust performance in industrial and construction applications, such as machinery assembly, structural frameworks, and automotive components. The zinc plated steel finish combats corrosion, making it suitable for environments exposed to moisture or chemicals. With 3/8"-24 UNF fine threads and a partially threaded shank, it provides superior grip and resistance to loosening under dynamic loads, addressing common issues like joint fatigue. The external hex drive facilitates quick installation, reducing labor time while maintaining high tensile strength for safety-critical connections. Ideal for B2B procurement, it meets stringent standards to ensure reliability in heavy-duty fastening tasks.
Specification Summary & Compliance
This fastener features a Class 2A thread fit for consistent engagement and adheres to ASME B18.2.1 and SAE J429 specifications. It is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met. The inch system measurements, including a 6" length and fine thread spacing, support precise engineering requirements.
