S-91236A971 1/2"-13 x 16" 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
- Exceptional tensile strength of 60,000 psi ensures reliable performance under heavy loads, reducing the risk of fastener failure in demanding applications.
- Zinc plating provides superior corrosion resistance, extending the service life of the screw in various environmental conditions and minimizing maintenance needs.
- Coarse UNC threads and Class 2A fit offer quick assembly and secure fastening, improving installation efficiency and joint integrity.
- Partially threaded design allows for precise clamping force control, ideal for applications where specific unthreaded grip length is required.
- External hex drive and hex head enable easy installation with standard tools, reducing assembly time and labor costs.
- Compliance with ASME B18.2.1 and ASTM A307 guarantees consistent quality and dimensional accuracy, ensuring interchangeability and reliability in industrial setups.
- Rockwell B69 hardness provides excellent durability and wear resistance, maintaining thread integrity through repeated use.
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as structural steel connections, machinery assembly, and construction projects. The steel material combined with a zinc-plated finish effectively combats corrosion, prolonging fastener life in harsh environments. Its coarse thread and partial threading ensure rapid installation and optimal clamping where full threading isn't necessary, reducing material stress. With a 16" length and external hex drive, it offers robust fastening for large-scale assemblies, enhancing structural stability and minimizing downtime in industrial maintenance and manufacturing processes.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for standard tolerance and ease of assembly. It meets ASME B18.2.1 and ASTM A307 specifications, ensuring dimensional consistency and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it adheres to environmental and safety standards for global industrial use.
