S-93548A712 1/2"-13 x 1 1/4" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior Anti-Rotation Performance: The integrated square neck design securely locks into materials, preventing the bolt from turning during tightening for reliable, stable installations.
• Enhanced Corrosion Resistance: Zinc-plated steel construction provides a durable protective barrier, extending the bolt's service life in various industrial environments.
• High Tensile Strength for Demanding Applications: With a 60,000 PSI tensile strength and Grade 2 classification, this bolt is built to handle significant mechanical stress and load-bearing requirements.
• Optimized for Quick and Easy Installation: The fully threaded UNC coarse thread pattern ensures faster driving and a secure grip in a wide range of materials.
• Consistent and Reliable Thread Engagement: Manufactured to Class 2A thread fit standards, ensuring predictable performance and compatibility with standard nuts.
• Broad Industrial Compliance: Meets critical standards including ASTM A307, SAE J429, and ASME B18.5, guaranteeing quality and interchangeability.
• Safe for Regulated Environments: Compliant with RoHS 3 and REACH regulations, making it suitable for use in projects with strict environmental and safety requirements.

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel carriage bolt is engineered to solve common fastening challenges in structural and heavy-duty assemblies. The combination of a rounded head with a wide profile and the crucial square neck under the head provides exceptional anti-rotation properties, which is vital for applications in wood-to-metal connections, construction framework, and agricultural equipment where vibration can loosen standard fasteners. The zinc plating offers a cost-effective layer of corrosion resistance, protecting the underlying steel and maintaining the integrity of the joint. The 1/2"-13 UNC coarse thread and fully threaded design allow for deep penetration and a strong hold in both soft and hard materials, making it a versatile and reliable choice for industrial maintenance, trailer building, and machinery assembly where 60,000 PSI tensile strength is a fundamental requirement.

Specification Summary & Compliance

This carriage bolt is precision-manufactured with a Class 2A thread fit for consistent assembly and features a 1/2"-13 UNC coarse thread. It conforms to the dimensional requirements of ASME B18.5 and meets the material and mechanical property specifications of ASTM A307 and SAE J429 Grade 2. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it adheres to stringent environmental and safety regulations for industrial components.