S-90185A253 1/2"-13 x 9 1/2" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance thanks to the integrated square neck that locks securely into materials, preventing spinning during installation and ensuring a stable, reliable connection.
• Exceptional tensile strength for demanding applications with a Grade 5 rating and 120,000 psi tensile strength, providing high load-bearing capacity and resistance to shear and tensile forces.
• Enhanced corrosion resistance from the zinc-plated steel construction, offering durable protection against rust and environmental degradation in industrial settings.
• Reliable and easy installation with fully threaded UNC coarse threading and Class 3A thread fit, ensuring precise, secure fastening and reducing the risk of cross-threading.
• Optimized for heavy-duty structural use featuring a wide, rounded carriage head that distributes load effectively and minimizes surface damage, ideal for wood and metal assemblies.
• Consistent quality and dimensional accuracy manufactured to meet ASME B18.5 standards, guaranteeing interchangeability and performance in critical engineering applications.
• Safe and compliant for global use adhering to RoHS 3 and REACH regulations, ensuring environmental safety and suitability for various industrial markets.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt is engineered to address common industrial challenges such as joint failure, corrosion, and installation inefficiency. The square neck design provides superior anti-rotation, eliminating the need for additional locking mechanisms and speeding up assembly in structural frameworks, machinery, and transportation equipment. Made from high-strength steel with a Rockwell C25 hardness and 120,000 psi tensile strength, it withstands heavy loads and dynamic stresses in construction, agricultural, and automotive applications. The fully threaded UNC coarse thread and Class 3A fit ensure quick, secure fastening with reduced risk of stripping, while the zinc plating offers long-term corrosion resistance, making it ideal for outdoor and harsh environment use. By meeting ASME B18.5 standards, this bolt delivers reliable performance and compatibility, enhancing safety and durability in professional engineering projects.

Specification Summary & Compliance

This carriage bolt features precise dimensions including a 1/2"-13 UNC coarse thread with Class 3A thread fit for accurate engagement, and a length of 9 1/2". It complies with ASME B18.5 specifications (referencing SAE J429) for dimensional consistency and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for industrial use.