Cotter Pin - Heavy-Duty Split Pin for Mechanical Fastening Applications #3697460 (License: Personal Use)

This is a standard split cotter pin made of hardened steel with a zinc-plated finish for corrosion resistance. One end is bent into a U-shaped loop for easy insertion and removal, while the other remains straight for passing through a hole in a bolt or shaft. Designed to prevent loosening under vibration, it’s commonly used in pivot points, clevises, and retaining applications.

Used on product pages for hardware suppliers, repair manuals, and DIY tool guides; matches user intent for sourcing fasteners, identifying parts, or learning installation techniques.