S-3313N48 1/2"-20 x 4" ASTM A354BD Threaded Rods

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life and maintains integrity in harsh or outdoor industrial environments.
• Precision Class 2A thread fit guarantees smooth assembly and secure fastening, minimizing cross-threading and installation errors.
• Fine UNF thread spacing provides enhanced grip and vibration resistance, ideal for machinery and equipment requiring stable, long-term connections.
• High hardness (Rockwell C33) offers excellent wear resistance, maintaining thread integrity through repeated use and adjustments.
• Full threading along the 4" length allows for flexible nut placement and adjustable fastening solutions across various project needs.
• Compliance with ASTM A354BD and environmental standards ensures consistent quality and safe use in regulated industries, supporting sustainability goals.

Professional Applications & Engineering Value

This 1/2"-20 UNF fully threaded rod is engineered to address critical challenges in industrial settings, such as vibration loosening and environmental degradation. Constructed from zinc yellow-chromate plated steel, it combats rust and corrosion, making it suitable for outdoor machinery, construction frameworks, and automotive assemblies where exposure to moisture is common. The fine thread spacing and right-hand thread direction enhance clamping force and stability, preventing unintended disassembly in dynamic applications like conveyor systems or structural supports. With a tensile strength of 150,000 psi and adherence to ASTM Grade BD specifications, it delivers reliable performance in high-load scenarios, reducing maintenance downtime and ensuring long-term operational safety for engineers and procurement specialists.

Specification Summary & Compliance

This threaded rod features a 1/2"-20 UNF thread size with Class 2A thread fit for precise dimensional accuracy, following standardized fine thread spacing and right-hand thread direction. It meets ASTM A354BD manufacturing specifications, ensuring consistent strength and durability. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for industrial use.