#4 Hi‑Collar Lock Washer, Stainless Steel 18‑8

Manufactured from 18‑8 stainless steel, this #4 hi‑collar lock washer is designed to resist loosening caused by vibration and movement. The raised collar provides added locking action and reliable spring tension under the fastener, helping maintain clamp load over time. Excellent corrosion resistance makes it well suited for automotive, electrical, industrial, and general‑purpose inch‑series applications.