S-92865A436 5/8"-18 x 2" 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 demanding applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc plating extends service life in harsh environments, minimizing maintenance and replacement costs.
- High hardness rating (Rockwell C25) provides excellent wear resistance and durability under heavy loads and vibration.
- UNF fine threading offers enhanced holding power and vibration resistance compared to coarse threads, ideal for precision assemblies.
- Class 2A thread fit ensures easy assembly and consistent performance, reducing installation time and improving efficiency.
- Full threading along the 2-inch length allows for maximum adjustability and secure fastening in various material thicknesses.
- External hex drive design enables quick and secure tightening with standard tools, speeding up installation in industrial settings.
Professional Applications & Engineering Value
This Grade 5 steel hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, structural frameworks, and automotive components. The UNF fine thread design enhances grip and resistance to loosening under dynamic loads, while the zinc plating provides a protective barrier against corrosion, extending lifespan in exposed or humid conditions. With a tensile strength of 120,000 PSI and Rockwell C25 hardness, it withstands high-stress environments without deformation, making it ideal for securing critical joints in construction, manufacturing, and equipment maintenance. The external hex drive ensures efficient installation with common tools, reducing labor time and improving project timelines.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit tolerances for consistent performance and ease of assembly. It meets ASME B18.2.1 and SAE J429 standards, ensuring dimensional accuracy and reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and sustainable industrial use.
