S-91309A730 1/2"-13 x 4 1/2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
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 in heavy-duty applications
- Class 2A thread fit provides consistent, secure fastening with standard mating components
- Full threading design offers maximum grip length and uniform load distribution
- External hex drive with 3/4" head width enables high-torque installation using common tools
- Coarse UNC thread pattern facilitates quick assembly and reduced cross-threading risk
- Rockwell B69 hardness rating maintains structural integrity under repeated stress
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw delivers exceptional engineering value for industrial assembly applications where vibration resistance and structural integrity are critical. The steel construction with zinc plating provides durable protection against corrosion in manufacturing facilities, construction sites, and machinery installations. The coarse thread design ensures rapid installation in various materials while minimizing stripping risks. With its external hex drive and substantial 4 1/2" length, this fastener accommodates thick assemblies and permits high clamping force applications. Engineers specify these fully threaded hex screws for structural connections, equipment mounting, and heavy machinery where 60,000 psi tensile strength meets demanding load requirements without compromising on installation efficiency.
Specification Summary & Compliance
This hex head screw features 1/2"-13 UNC coarse threads with Class 2A thread fit per ASME standards, ensuring dimensional accuracy and interchangeability. Manufactured from steel with zinc plating finish, it complies with ASME B18.2.1 and ASTM A307 specifications for mechanical properties and dimensional requirements. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety standards for industrial components.
