S-91247A630 3/8"-16 x 1 3/4" 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 industrial applications, reducing the risk of fastener failure.
- Zinc plating finish provides excellent corrosion resistance, extending the service life of the screw in various environments.
- Grade 5 steel construction with Rockwell C25 hardness offers superior durability and resistance to wear, maintaining integrity under heavy loads.
- 3/8"-16 UNC coarse threading with Class 2A fit allows for quick and easy installation, minimizing assembly time and improving efficiency.
- Partially threaded design enables precise clamping force control, ideal for applications where specific grip ranges are required.
- External hex drive and hex head facilitate straightforward tightening with common tools, enhancing usability in tight spaces.
- Compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent quality and interoperability, ensuring safe and reliable fastening solutions.
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered to address common industrial challenges, such as vibration-induced loosening and environmental corrosion. Made from high-strength steel and featuring a zinc plated surface, it resists rust and degradation in harsh conditions, making it ideal for machinery, construction, and automotive assemblies. The 3/8"-16 UNC coarse thread and partial threading provide secure fastening with reduced installation effort, while the external hex drive ensures compatibility with standard wrenches. By meeting rigorous standards like ASME B18.2.1, it delivers consistent performance, minimizing downtime and maintenance costs in industrial applications that demand reliability and efficiency.
Specification Summary & Compliance
This screw adheres to precise dimensional tolerances, including Class 2A thread fit for consistent engagement and UNC coarse threading per industry standards. It complies with ASME B18.2.1 and SAE J429 specifications, ensuring manufacturing consistency. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety compliance for global use.
