S-94622A225 5/16"-24 x 2 3/32" AN5-20 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 tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration
• Precision Class 3A thread fit provides consistent engagement and eliminates loosening in critical applications
• Integrated cotter pin locking mechanism prevents accidental disassembly in high-vibration machinery
• External hex drive design allows for high-torque installation with standard tools
• AN5-20 specification compliance guarantees interchangeability and quality for aerospace and defense applications
• Rockwell C26 hardness rating maintains thread integrity and prevents stripping during repeated use

Professional Applications & Engineering Value

This cadmium-plated steel hex head screw delivers critical performance where failure is not an option. The Class 3A thread fit ensures precise engagement in aircraft assemblies, heavy machinery, and industrial equipment where vibration resistance is paramount. The partial threading design concentrates stress away from the head while the cotter pin locking system provides mechanical security that surpasses chemical locking methods. With fine thread spacing and 120,000 psi tensile strength, this fastener maintains clamp force under extreme conditions, solving common challenges of joint relaxation and corrosion-induced failure in AN5-20 specification applications.

Specification Summary & Compliance

Manufactured to AN5-20 specifications with Class 3A thread fit precision and UNF fine thread profile. Features Rockwell C26 hardness and 120,000 psi tensile strength with cadmium plating for corrosion protection. Designed for use with 1/16" cotter pins through 0.076" diameter hole. Complies with inch measurement system standards for aerospace and industrial applications requiring reliable mechanical locking solutions.