S-92865A161 5/16"-18 x 1 7/8" 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
- Exceptional tensile strength with 120,000 PSI rating ensures reliable performance in high-stress industrial applications
- Superior corrosion resistance through zinc plating extends service life in demanding environments
- Precision Class 2A thread fit provides consistent engagement and reduces installation issues
- Grade 5 steel construction with Rockwell C25 hardness delivers optimal durability and wear resistance
- External hex drive design allows for high-torque installation and easy maintenance access
- Partial threading configuration offers concentrated holding power where needed most
- Industry-standard compliance ensures compatibility and reliability across various applications
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 5 hex head screws provide critical fastening solutions where failure is not an option. The 5/16"-18 UNC coarse thread design ensures rapid installation and superior resistance to vibration loosening, making them ideal for construction equipment, machinery assembly, and structural frameworks. The zinc plated finish creates a protective barrier against environmental corrosion, while the partially threaded configuration concentrates clamping force precisely where needed. With external hex drive compatibility, these screws accommodate standard tools for efficient installation and maintenance in confined spaces, reducing labor time and improving project efficiency.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with UNC coarse threading (5/16"-18) and meets ASME B18.2.1 and SAE J429 manufacturing specifications. The fastener demonstrates full compliance with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use across various industrial sectors. Manufactured to exacting dimensional standards with 1 7/8" length and 7/8" minimum thread length, these screws deliver consistent performance and reliable mechanical properties.
