S-92235A528 1/2"-13 x 1 1/4" Flanged Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide coating extends service life in harsh environments, minimizing maintenance and replacement costs.
• Precision Class 3A thread fit provides consistent, secure fastening with reduced risk of cross-threading and improved assembly efficiency.
• Robust Rockwell C39 hardness offers excellent wear resistance, maintaining thread integrity and dimensional stability under heavy loads.
• Integrated flange design eliminates the need for separate washers, simplifying installation and providing a larger bearing surface for enhanced load distribution.
• Coarse UNC threads enable quicker assembly and disassembly, ideal for applications requiring frequent adjustments or maintenance.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global standards for industrial use without compromising performance.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in heavy-duty machinery, automotive assemblies, and construction equipment. The combination of alloy steel material and black-oxide surface treatment provides superior resistance to rust and wear, making it ideal for environments exposed to moisture, chemicals, or high friction. The 1/2"-13 UNC coarse thread and Class 3A precision fit ensure fast, reliable fastening with minimal risk of stripping, while the flanged head distributes clamping force evenly, preventing surface damage and loosening under vibration. These features make it a top choice for engineers seeking durability, compliance, and efficiency in industrial fastening solutions.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 3A thread fit for high precision and consistent performance. It meets RoHS 3 (2015/863/EU) compliance with exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant, ensuring it aligns with international environmental and safety regulations for industrial use.