S-92865A938 1/4"-20 x 5/8" 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
- Superior load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for reliable performance in demanding applications
- Enhanced corrosion resistance through zinc plating, extending service life in various industrial environments
- Optimized thread engagement with UNC coarse spacing and Class 2A fit ensuring secure fastening and vibration resistance
- Efficient installation and removal via external hex drive design compatible with standard tools
- Consistent mechanical properties with Rockwell C25 hardness providing excellent durability and wear resistance
- Full threading coverage along the 5/8" length for maximum grip strength and uniform stress distribution
- Right-hand thread direction following industry standards for straightforward assembly procedures
Professional Applications & Engineering Value
These Grade 5 steel hex head screws deliver exceptional engineering value in industrial assembly where vibration resistance and structural integrity are critical. The zinc plating provides reliable corrosion protection for machinery, equipment frames, and structural components exposed to harsh environments. The UNC coarse thread design ensures rapid installation and superior holding power in steel-to-steel applications, while the external hex drive allows for high torque application without stripping. Manufactured to ASME B18.2.1 specifications, these fully threaded fasteners maintain consistent performance in heavy-duty applications from manufacturing to construction, reducing maintenance frequency and improving operational reliability.
Specification Summary & Compliance
This 1/4"-20 x 5/8" hex head screw features precise Class 2A thread fit tolerances and UNC coarse thread spacing per industry standards. Manufactured in compliance with ASME B18.2.1 and SAE J429 Grade 5 specifications, ensuring dimensional accuracy and mechanical properties. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, making it suitable for regulated industries and international markets.
