S-90306A334 1/2"-13 x 1 1/2" Left-Hand Threaded 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in harsh environments, reducing maintenance costs
• Left-hand threading direction provides secure fastening in applications where standard right-hand threads would loosen under rotational forces
• Class 2A thread fit with UNC coarse threading delivers reliable engagement and easier assembly in industrial settings
• 70,000 psi tensile strength with Rockwell B70 hardness guarantees exceptional load-bearing capacity for heavy-duty applications
• Fully threaded 1-1/2" length design offers maximum grip length and superior holding power across the entire fastener
• External hex drive with 3/4" head width enables high-torque installation using standard tools for efficient assembly
• RoHS 3 and REACH compliance ensures environmental responsibility and regulatory acceptance for global industrial projects

Professional Applications & Engineering Value

This left-hand hex head screw addresses critical engineering challenges in applications where counter-rotational forces are present. The 18-8 stainless steel composition provides excellent corrosion resistance, making it ideal for marine equipment, food processing machinery, and chemical processing plants where moisture and corrosive elements are concerns. The UNC coarse thread pattern combined with Class 2A thread fit ensures reliable performance in vibration-prone environments, preventing accidental loosening in machinery, rotating equipment, and automotive applications. The external hex drive design allows for high-torque installation, crucial for maintaining structural integrity in heavy machinery, construction equipment, and industrial assemblies requiring left-hand threading solutions for safety-critical connections.

Specification Summary & Compliance

This 1/2"-13 UNC left hand hex head screw features precise Class 2A thread fit tolerances with coarse thread spacing, manufactured to standard inch system dimensions. The fastener maintains 0.5" thread diameter with 1-1/2" length and fully threaded design for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.