S-92198A963 1 1/2"-6 x 4 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• High-strength performance delivering 80,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing in demanding assemblies.
• Secure and precise fastening ensured by Class 2A thread fit, minimizing the risk of cross-threading and ensuring consistent engagement.
• Optimized for heavy-duty use featuring a coarse UNC thread and external hex drive for high torque application and easy installation with standard tools.
• Enhanced design flexibility with a partially threaded shank, allowing for controlled clamping force and reduced thread galling.
• Long-term reliability backed by compliance with ASME B18.2.1 manufacturing standards, ensuring dimensional accuracy and interchangeability.
• Environmentally responsible sourcing with full RoHS 3 and REACH compliance, meeting strict international regulatory requirements.

Professional Applications & Engineering Value

This 1 1/2"-6 UNC Hex Head Screw is engineered to address critical challenges in heavy-duty industrial applications, including structural steelwork, machinery assembly, and construction projects. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, significantly extending service life in corrosive environments. The coarse UNC thread and external hex drive enable rapid installation and high clamping force, reducing assembly time while maintaining joint integrity. With its partially threaded design, it minimizes friction in non-clamping zones, preventing seizing and simplifying disassembly for maintenance. This fastener is a trusted solution for engineers seeking a corrosion-resistant, high-strength screw that delivers consistent performance under extreme mechanical stress.

Specification Summary & Compliance

This hex head screw features a 1 1/2"-6 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in accordance with ASME B18.2.1 specifications, ensuring precise dimensional control for head width (2 1/4"), head height (15/16"), and overall length (4 1/2"). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.