S-91236A742 1/2"-13 x 9" 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
- High tensile strength of 60,000 PSI ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
- Zinc plating provides excellent corrosion resistance, extending the service life of the screw in various environmental conditions.
- Class 2A thread fit with UNC coarse threading offers easier assembly and improved vibration resistance in heavy machinery.
- Partially threaded design allows for precise clamping force control and secure fastening in structural connections.
- External hex drive and hex head enable quick installation and removal with standard tools, boosting efficiency on the job site.
- Compliance with ASME B18.2.1 and ASTM A307 standards guarantees consistent quality and interoperability in professional projects.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw is engineered to address common challenges in industrial fastening, such as joint integrity under high stress. Made from steel with a Rockwell B69 hardness, it resists deformation and wear in heavy-duty applications like construction, machinery assembly, and infrastructure projects. The coarse thread and partial threading design enhance grip and prevent loosening from vibrations, while the zinc-plated finish combats corrosion in harsh environments. By meeting ASME B18.2.1 specifications, it ensures dimensional accuracy and reliability, making it a go-to choice for engineers seeking durable, compliant fasteners that minimize maintenance and downtime.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC thread with Class 2A dimensional tolerance for precise fit, a 9" length, and partial threading up to a minimum of 1 1/2". It conforms to ASME B18.2.1 and ASTM A307 manufacturing standards, ensuring consistent performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental and safety regulations in industrial use.
