S-94622A244 1/2"-20 x 1 27/32" AN8-16 Cotter Pin-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with cadmium plating for extended service life in harsh industrial environments
• Exceptional load-bearing capability with 120,000 psi tensile strength for heavy-duty applications
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant connections
• Secure locking mechanism with integrated cotter pin preventing loosening under dynamic loads
• Optimized torque transmission through external hex drive design for efficient installation
• Enhanced durability with Rockwell C26 hardness maintaining structural integrity under stress
• Industry-standard compliance meeting AN8-16 specifications for aerospace and military applications

Professional Applications & Engineering Value

This cadmium-plated steel hex head screw delivers critical performance in demanding environments where vibration resistance and mechanical reliability are paramount. The 1/2"-20 UNF fine threading with Class 3A fit provides superior thread engagement, minimizing the risk of stripping while the cotter pin locking mechanism ensures permanent fastening security in high-vibration applications. The combination of 120,000 psi tensile strength and Rockwell C26 hardness makes this partially threaded screw ideal for critical assemblies in aerospace, heavy machinery, and transportation equipment where failure is not an option. The corrosion-resistant cadmium plating further extends service life in exposed or chemically aggressive environments.

Specification Summary & Compliance

This hex head screw features precision 1/2"-20 UNF fine threading with Class 3A thread fit for exceptional dimensional accuracy. The fastener meets AN8-16 specifications for aerospace and defense applications, ensuring compliance with rigorous industry standards. Manufacturing follows strict quality control for thread diameter (0.5"), thread spacing (fine), and hole diameter (0.106") compatibility with 3/32" cotter pins. The cadmium-plated steel construction complies with industrial requirements for corrosion protection and mechanical performance in critical fastening applications.