S-93548A730 1/2"-13 x 4 1/2" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior Anti-Rotation Performance: Square neck design securely locks into materials, preventing bolt spin during installation and vibration, reducing assembly time and maintenance needs.
• Enhanced Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust and environmental exposure, extending service life in demanding conditions.
• High Tensile Strength: Grade 2 classification with 60,000 PSI tensile strength ensures dependable load-bearing capacity for structural and heavy-duty applications.
• Easy Installation & Removal: Fully threaded UNC coarse thread design with Class 2A fit allows for quick engagement and disassembly, improving workflow efficiency.
• Wide Application Compatibility: Rounded carriage head with wide profile distributes clamping force evenly, minimizing surface damage in wood and metal assemblies.
• Consistent Quality Assurance: Manufactured to ASTM A307, SAE J429, and ASME B18.5 standards, guaranteeing dimensional accuracy and reliable performance.
• Environmental & Safety Compliance: RoHS 3 and REACH compliant, ensuring safe use in regulated industries without hazardous substances.

Professional Applications & Engineering Value

This 1/2"-13 carriage bolt is engineered to address common industrial challenges such as joint loosening under vibration and corrosion in outdoor or humid environments. The zinc-plated steel material combined with a square neck design provides exceptional anti-rotation properties, making it ideal for construction frameworks, trailer assemblies, and agricultural equipment where stability is critical. The fully threaded UNC coarse thread ensures secure fastening in soft materials like wood and composite panels, while the Grade 2 strength and 60,000 PSI tensile strength offer reliable performance in structural applications. Its compliance with major standards ensures interoperability and reduces the risk of fastener failure, providing long-term durability and cost savings.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit with UNC coarse threading (1/2"-13) and a square neck measuring 0.52" width for secure anti-rotation. It meets ASTM A307, SAE J429, and ASME B18.5 specifications for dimensional accuracy and mechanical properties. The bolt is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.