ANVINKU 330PCS Stainless Steel Cotter Pins - 7 Sizes for Auto & Marine

The ANVINKU 330PCS Cotter Pin Assortment gives you a complete, ready-to-use inventory of split pins for any repair job. Crafted from premium 304 stainless steel, each pin resists rust and corrosion, so they stay reliable even in harsh marine or automotive environments. With seven calibrated sizes-from M1 x 16mm up to M5 x 50mm-you can quickly match the right pin to any bolt or nut, eliminating the need to search for individual parts. These hairpin-style cotter pins lock nuts and bolts in place, preventing loosening caused by vibration, load shifts, or impact. Installation is simple: pull the pin through the hole, bend the ends, and the joint stays secure. Whether you are a professional mechanic, a marine technician, or a DIY enthusiast, this kit saves time, reduces inventory clutter, and ensures you always have the right fastener on hand. Trust ANVINKU for durable, corrosion-resistant hardware that delivers consistent performance across automotive, marine, and general repair projects.