S-92865A572 1/4"-20 x 8" 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 – With 120,000 psi tensile strength, this screw reliably handles heavy loads and high-stress applications without failure.
- Superior Corrosion Resistance – Zinc plating provides a durable protective layer, extending service life in harsh or outdoor environments.
- Easy Installation & Removal – External hex drive and coarse UNC threads allow for quick fastening with standard tools, reducing assembly time.
- Consistent Thread Fit – Class 2A thread fit ensures smooth engagement and reliable performance in repetitive assembly operations.
- Full Thread Engagement – Fully threaded 8" length offers maximum grip and adjustability across the entire fastener.
- Industry Compliance – Meets ASME B18.2.1 and SAE J429 standards, ensuring compatibility and reliability in regulated applications.
- Environmental Safety – RoHS 3 compliance guarantees the screw is free from hazardous substances, suitable for global supply chains.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address critical fastening challenges in industrial and construction settings. Its high tensile strength (120,000 psi) and Rockwell C25 hardness prevent stripping and shearing under dynamic or heavy loads, making it ideal for structural frameworks, machinery assembly, and equipment manufacturing. The UNC coarse thread and Class 2A fit provide rapid installation with reduced cross-threading risk, while the zinc plated finish combats rust in humid or corrosive environments. Fully threaded along its 8" length, it ensures uniform stress distribution and secure clamping in thick materials, delivering long-term reliability for demanding industrial fasteners applications.
Specification Summary & Compliance
This hex head screw features a 1/4"-20 UNC coarse thread with Class 2A dimensional accuracy, ensuring consistent fit and performance. It is manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, and meets RoHS 3 (2015/863/EU) environmental standards for safe use across various sectors.
