1/4" Phosphor Bronze Internal Tooth Lock Washer

Manufactured from phosphor bronze, this 1/4" internal tooth lock washer offers reliable resistance to loosening caused by vibration and movement while providing excellent corrosion resistance. The internal teeth bite into the underside of the fastener head and the mating surface to create secure locking action in a low‑profile design. Well suited for electrical, marine, and general‑purpose applications where conductivity, durability, and corrosion resistance are required.