3/8" Phosphor Bronze External Tooth Lock Washer

Manufactured from phosphor bronze, this 3/8" external tooth lock washer provides strong resistance to loosening caused by vibration and movement while offering excellent corrosion resistance. The external teeth grip the fastener head and mating surface to deliver reliable locking action and improved electrical conductivity. Ideal for electrical, marine, and general‑purpose applications where durability, conductivity, and corrosion resistance are essential.