S-90185A142 1/2"-13 x 2 1/2" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with a square neck design that securely locks into materials, preventing the bolt from spinning during installation and use.
• Exceptional tensile strength of 120,000 psi ensures reliable performance under high-stress conditions, ideal for demanding industrial applications.
• Enhanced corrosion resistance from the black-oxide steel finish, providing durable protection in various environmental conditions.
• Consistent and reliable fastening with Class 2A thread fit and UNC coarse threading, offering easier assembly and reduced risk of cross-threading.
• High durability and wear resistance due to Rockwell C25 hardness, maintaining structural integrity over extended use.
• Wide-rounded head design distributes load effectively, minimizing surface damage and providing a secure, flush fit.
• Full compliance with industry standards including ASME B18.5 and SAE J429, ensuring quality and reliability for professional applications.

Professional Applications & Engineering Value

This Grade 5 black-oxide steel carriage bolt is engineered to address common industrial fastening challenges, such as vibration-induced loosening and material wear. The square neck integrates seamlessly into pre-drilled holes, providing anti-rotation stability that is critical in machinery, structural frameworks, and transportation equipment. Its UNC coarse thread and Class 2A fit facilitate quick installation in wood, metal, and composite materials, reducing assembly time while maintaining a secure connection. With a tensile strength of 120,000 psi and Rockwell C25 hardness, it withstands heavy loads and harsh environments, making it a reliable choice for construction, automotive, and agricultural applications where durability and compliance with ASME B18.5 standards are paramount.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit and UNC coarse threading with a size of 1/2"-13, ensuring dimensional accuracy per industry standards. It is manufactured in accordance with ASME B18.5 and SAE J429 specifications, guaranteeing consistent performance. Additionally, the product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.