1/4" x 4" Cotter Pins – Stainless Steel SS300

Secure large and extended fastener assemblies with corrosion‑resistant 1/4" x 4" cotter pins manufactured from SS300 stainless steel. Designed to lock clevis pins, castle nuts, and bolts in place, these stainless cotter pins are easy to install and bend for a tight, vibration‑resistant hold. The SS300 stainless construction provides excellent resistance to rust and corrosion, making them ideal for marine, industrial, automotive, food‑grade, and outdoor applications where strength, cleanliness, and long service life are required.