S-92865A585 5/16"-18 x 1 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.
- Precise Class 2A thread fit guarantees easy assembly and secure fastening, improving installation efficiency and joint integrity.
- High hardness (Rockwell C25) provides excellent wear resistance, maintaining thread integrity through repeated use and vibration.
- Coarse UNC threading offers quick installation and superior grip in a wide range of materials, speeding up production timelines.
- Full threading along the entire 1 1/4" length allows for maximum adjustability and holding power in various material thicknesses.
- Compliance with ASME B18.2.1 and SAE J429 standards ensures consistent quality and interoperability with other standardized components.
Professional Applications & Engineering Value
Engineered for demanding environments, these Grade 5 hex head screws deliver robust performance where reliability is non-negotiable. The zinc-plated steel construction combats oxidation in outdoor or humid settings, while the coarse UNC thread resists loosening under vibration—common in machinery, automotive assemblies, and structural frameworks. With a 1 1/4" length and external hex drive, they provide ample engagement for thick materials, ensuring stable connections in heavy-duty applications. This combination of high tensile strength and corrosion resistance addresses critical failure points, offering engineers a dependable solution for long-term operational safety and reduced downtime.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit tolerances per UNC standards, ensuring precision in manufacturing. It meets ASME B18.2.1 and SAE J429 Grade 5 specifications for dimensional consistency and mechanical properties. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.
