S-92865A554 1/4"-20 x 3" 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 tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc plating provides superior corrosion resistance, extending service life in harsh industrial environments and minimizing maintenance needs.
- Grade 5 classification and Rockwell C25 hardness offer excellent durability and wear resistance for demanding mechanical assemblies.
- UNC coarse threading with Class 2A fit enables quick installation and secure fastening, improving assembly efficiency.
- Fully threaded design allows for consistent clamping force along the entire length, enhancing joint stability.
- External hex drive and standard hex head facilitate easy tightening with common tools, speeding up maintenance and repairs.
- Compliance with ASME B18.2.1, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.
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 with a zinc-plated finish, it resists rust and wear in applications like machinery assembly, construction frameworks, and automotive components. The UNC coarse thread and Class 2A fit provide reliable engagement in coarse-grained materials, reducing cross-threading risks and ensuring consistent torque performance. Ideal for heavy-duty fastening, its fully threaded design distributes load evenly, preventing joint failure in dynamic settings. By meeting ASME B18.2.1 standards, it delivers predictable performance, minimizing downtime and enhancing operational safety in industrial hex screw applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, with dimensions including a 1/4"-20 thread size, 3" length, and coarse threading. It complies with ASME B18.2.1 and SAE J429 specifications for consistent quality. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets environmental and safety regulations for industrial use.
