S-91236A818 5/8"-11 x 6" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength 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 corrosion resistance with zinc plating, extending service life in demanding environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B69 hardness provides excellent durability and resistance to wear
- Coarse UNC thread with Class 2A fit offers easier assembly and reduced risk of cross-threading
- External hex drive design allows for high torque application with standard tools
- Partial threading provides optimal grip strength while reducing material usage
- Full compliance with ASME B18.2.1 and ASTM A307 standards guarantees consistent quality and performance
Professional Applications & Engineering Value
This 5/8"-11 UNC hex head screw delivers exceptional engineering value for industrial applications where reliability is paramount. The steel construction with zinc plating provides robust protection against corrosion in harsh environments, while the 60,000 psi tensile strength ensures secure fastening in structural applications, machinery assembly, and heavy equipment. The coarse thread design enables quicker installation and superior performance in materials where fine threads might strip or fail. With its external hex drive and partially threaded configuration, this fastener offers optimal clamping force distribution, making it ideal for construction, manufacturing, and maintenance applications requiring dependable, high-strength connections that withstand vibration and dynamic loads.
Specification Summary & Compliance
This hex head screw features precision Class 2A thread fit with UNC coarse threading (5/8"-11) and meets ASME B18.2.1 dimensional specifications under ASTM A307 material standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Manufacturing adheres to strict quality controls for dimensional accuracy, including 6" length, 15/16" head width, and proper thread engagement specifications.
