S-94622A223 5/16"-24 x 1 11/32" AN5-12 Cotter Pin-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with cadmium plating, extending service life in harsh industrial environments
• Exceptional tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration
• Precision Class 3A thread fit provides secure, tight fastening with minimal backlash in critical assemblies
• Cotter pin locking mechanism prevents accidental loosening, maintaining integrity in high-vibration applications
• External hex drive design allows for high-torque installation with standard tools, reducing assembly time
• AN5-12 specification compliance guarantees consistent quality and interchangeability for aerospace and defense applications
• Rockwell C26 hardness rating offers excellent wear resistance and durability through repeated use cycles

Professional Applications & Engineering Value

This cadmium-plated steel hex head screw delivers critical performance where failure is not an option. The UNF fine threading with Class 3A fit ensures precise engagement in tapped holes, eliminating play in aerospace assemblies and heavy-duty machinery. The partially threaded design concentrates strength where needed while the cotter pin locking mechanism provides positive mechanical locking that outperforms chemical threadlockers in high-temperature environments. With AN5-12 specifications, this fastener meets rigorous aviation standards, making it ideal for critical structural connections subject to dynamic loads and vibration. The combination of 120,000 psi tensile strength and Rockwell C26 hardness provides exceptional resistance to both static and fatigue loading in demanding industrial applications.

Specification Summary & Compliance

This 5/16"-24 UNF hex head screw features Class 3A thread tolerance for precision fit, partial threading with 17/32" thread length, and fine thread spacing for superior holding power. Manufactured to meet AN5-12 specifications with external hex drive (1/2" head width) and cotter pin locking (1/16" pin diameter). The cadmium-plated steel construction provides corrosion protection while maintaining 120,000 psi tensile strength and Rockwell C26 hardness. Compliant with industry standards for aerospace and military applications requiring reliable, high-strength fastening solutions.