S-93548A741 1/2"-13 x 8 1/2" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments.
- Enhanced anti-rotation performance due to the integrated square neck design, preventing bolt spin during installation and use.
- High tensile strength of 60,000 PSI and Grade 2 classification for reliable load-bearing in demanding applications.
- Excellent durability with Rockwell B70 hardness, resisting deformation under stress.
- Secure fastening with coarse UNC threads and Class 2A fit, ensuring easy assembly and vibration resistance.
- Versatile partial threading allowing for adjustable grip range and effective clamping in wood or metal assemblies.
- Compliance with major standards including ASTM A307, SAE J429, and ASME B18.5, guaranteeing consistent quality and interchangeability.
Professional Applications & Engineering Value
This zinc-plated steel carriage bolt is engineered to address common industrial fastening challenges, such as loosening under vibration and corrosion in outdoor settings. The square neck design locks securely into materials, eliminating rotation during torque application, which is critical for structural integrity in construction, machinery, and transportation equipment. Made from Grade 2 material with a Rockwell B70 hardness, it withstands heavy loads and impacts, while the zinc plating provides a protective barrier against moisture and chemicals. The coarse UNC thread and partial threading enable quick installation and reliable holding power in wood-to-metal or composite joints, reducing maintenance needs and downtime in industrial applications.
Specification Summary & Compliance
This carriage bolt features a 1/2"-13 UNC coarse thread with a Class 2A thread fit for precise dimensional tolerance. It complies with ASTM A307, SAE J429, and ASME B18.5 specifications, ensuring adherence to recognized manufacturing standards. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for global industrial use.
