S-92865A171 1/4"-20 x 1/4" 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
- Exceptional tensile strength of 120,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
- Fully threaded UNC coarse design provides maximum grip and holding power, allowing for secure fastening in a wide range of materials.
- Class 2A thread fit offers consistent, easy assembly while maintaining tight tolerances for vibration resistance and long-term stability.
- Grade 5 steel construction with Rockwell C25 hardness delivers optimal durability and wear resistance, ideal for heavy-duty mechanical assemblies.
- External hex drive and hex head enable quick installation and high torque application with standard tools, improving assembly efficiency.
- Compliance with major industry standards including ASME B18.2.1 and SAE J429 ensures interoperability and reliability in professional applications.
Professional Applications & Engineering Value
Engineered for demanding environments, these Grade 5 hex head screws combine high-strength steel and zinc plating to combat corrosion and mechanical stress in construction, machinery, and automotive assemblies. The fully threaded UNC coarse profile ensures deep engagement and superior clamping force, preventing loosening under vibration—a common challenge in industrial settings. With a right-hand thread direction and external hex drive, they facilitate rapid installation and removal, reducing downtime. Ideal for securing structural components, these screws meet rigorous ASME B18.2.1 specifications, providing engineers with a dependable solution for heavy-duty fastening that maintains integrity under loads up to 120,000 PSI.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy. It conforms to ASME B18.2.1 and SAE J429 manufacturing specifications, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material reliability.
