S-91236A609 5/16"-18 x 7" 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 for extended service life in harsh industrial 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 deformation
- Class 2A thread fit with UNC coarse threads enables quick assembly and secure fastening
- External hex drive design allows for high torque application with standard tools
- Partial threading offers optimal grip length control for precise joint clamping
- Compliance with major standards including ASME B18.2.1 and ASTM A307 ensures quality and interchangeability
Professional Applications & Engineering Value
These 5/16"-18 UNC hex head screws deliver exceptional engineering value for industrial applications requiring robust fastening solutions. The steel construction combined with zinc plating provides critical corrosion protection in manufacturing facilities, construction sites, and outdoor equipment assembly. The coarse UNC thread design ensures rapid installation and reliable performance in materials where fine threads might strip or fail. With partial threading, these screws offer precise control over clamping force distribution, making them ideal for structural connections, machinery assembly, and heavy equipment maintenance where vibration resistance and long-term reliability are paramount. The external hex drive accommodates high torque requirements common in industrial settings, while the 7" length provides ample engagement for substantial material thicknesses.
Specification Summary & Compliance
This hex head screw features precise Class 2A thread fit with 5/16"-18 UNC coarse threads and right-hand thread direction. Manufacturing complies with ASME B18.2.1 specifications and ASTM A307 standard for carbon steel bolts. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations regarding substance restrictions, ensuring environmental responsibility and workplace safety standards.
