S-90034A045 4-40 x 1 ft. Threaded Rods

Key Features & Benefits at a Glance

• Exceptional Tensile Performance – Withstands up to 50,000 psi tensile stress, providing reliable load-bearing capacity for demanding mechanical assemblies.
• Superior Corrosion Resistance – Zinc-plated steel construction offers enhanced protection against rust and environmental degradation in industrial settings.
• Precision Thread Compatibility – Class 1A thread fit ensures smooth assembly and interchangeability with standard 4-40 UNC nuts and components.
• Full-Length Threading Convenience – Fully threaded 1-foot rod allows for adjustable fastening positions without requiring additional machining.
• Consistent Material Hardness – Rockwell B61 hardness maintains thread integrity and resistance to wear under repeated use.
• Regulatory Compliance Assurance – Meets RoHS 3 and REACH environmental standards, making it suitable for regulated industries and export applications.
• Right-Hand Thread Efficiency – Standard right-hand threading simplifies installation using common tools and reduces assembly time.

Professional Applications & Engineering Value

This 4-40 UNC fully threaded rod in zinc-plated steel addresses critical needs in machinery, electronics, and structural frameworks where vibration resistance and long-term reliability are paramount. The coarse thread spacing provides rapid assembly and superior grip in materials prone to stripping, while the 50,000 psi tensile strength ensures stability under dynamic loads. Engineers value its Class 1A thread fit for precision alignment in conveyor systems, mounting brackets, and automated equipment, minimizing loosening and maintenance downtime. The combination of Rockwell B61 hardness and corrosion-resistant plating makes it ideal for HVAC, automotive, and outdoor installations exposed to harsh conditions.

Specification Summary & Compliance

This threaded rod adheres to UNC coarse thread standards with a 4-40 thread size and Class 1A external thread fit for consistent dimensional accuracy. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. The right-hand thread direction and 1 ft length provide versatility in inch-based assembly applications, backed by verified 50,000 psi tensile strength and material certifications.