S-92865A552 1/4"-20 x 2 1/2" 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
- Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial assemblies
- Superior corrosion resistance from zinc plating, extending service life in demanding environments
- Reliable fastening performance with Grade 5 steel and Rockwell C25 hardness for consistent durability
- Easy installation and removal thanks to the external hex drive and coarse UNC threading
- Precise thread engagement with Class 2A fit, reducing cross-threading risks in repetitive applications
- Full-length threading ensures maximum grip and adjustability across the entire 2 1/2" length
- Compliance with major industrial standards including ASME B18.2.1, ensuring interchangeability and safety
Professional Applications & Engineering Value
This Grade 5 hex head screw is engineered for heavy-duty applications where reliability is non-negotiable. The zinc-plated steel construction provides a robust barrier against oxidation, making it suitable for outdoor equipment, machinery frames, and structural assemblies exposed to moisture. The coarse UNC thread and Class 2A fit allow for quick installation with standard tools, minimizing assembly time while maintaining vibration resistance. Its fully threaded design ensures uniform stress distribution, reducing the risk of joint failure in dynamic loads. Commonly used in construction, automotive, and industrial manufacturing, this fastener meets the rigorous demands of B2B procurement for consistent, specification-compliant components.
Specification Summary & Compliance
Manufactured to ASME B18.2.1 and SAE J429 standards, this hex head screw features precise UNC coarse threads with Class 2A tolerance for reliable fit. The 1/4"-20 thread size and 2 1/2" length adhere to inch-system measurements, while the zinc plating finish enhances durability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures environmental and safety adherence for global industrial use.
