M20 Type J Internal Tooth Lock Washer, Stainless Steel A2 (18‑8)

Manufactured from A2 (18‑8) stainless steel, this M20 Type J internal tooth lock washer is designed to resist loosening caused by vibration and movement in metric assemblies. The internal teeth bite into the underside of the fastener head and the mating surface to provide secure locking action while maintaining a low‑profile fit. Excellent corrosion resistance makes it well suited for industrial, structural, and general‑purpose metric applications requiring reliable fastening and long‑term durability.