S-91412A530 1/2"-13 x 3" Stainless Steel Thread-Locking Hex Head Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking: Permanent Nylon Patch thread locker ensures reliable fastening that won't loosen under dynamic loads or vibration.
• Exceptional corrosion resistance: Made from 18-8 Stainless Steel, offering excellent durability in harsh or corrosive environments.
• High-strength performance: With a 70,000 psi tensile strength and Rockwell B70 hardness, this screw is built for demanding, heavy-duty applications.
• Wide temperature tolerance: The Nylon Patch locking functions effectively across a broad temperature range from -55° to 250° F.
• Secure and precise fit: Class 2A thread fit with UNC coarse threading provides easy assembly and a secure, reliable connection.
• Optimized for industrial use: The external hex drive and hex head design allow for high-torque installation with standard tools.
• Compliant and safe: Meets RoHS 3 and REACH compliance standards, ensuring they are safe for use in regulated industries.

Professional Applications & Engineering Value

Engineered for critical fastening where vibration and thermal cycling are concerns, this 1/2"-13 UNC Hex Head Screw delivers exceptional engineering value. The permanent Nylon Patch thread locker is integrally applied, eliminating the need for separate locking washers or adhesives and providing a consistent, chemical-free locking force that resists loosening. Constructed from 18-8 Stainless Steel, it offers superior corrosion resistance, making it ideal for outdoor equipment, marine applications, and chemical processing plants. The coarse UNC thread and Class 2A fit ensure quick assembly and a secure hold in a variety of materials, from steel to aluminum. Its partially threaded design concentrates the clamping force precisely where needed, preventing joint failure in heavy-duty industrial machinery, structural frameworks, and transportation equipment.

Specification Summary & Compliance

This screw features a 1/2"-13 UNC thread with a Class 2A thread fit for precise dimensional accuracy and reliable engagement. It is manufactured from 18-8 Stainless Steel and includes a Nylon Patch applied to the threads for locking. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for use in strict regulatory environments.