M4 Type A DIN 6798A External Tooth Serrated Lock Washer, Stainless Steel A2 (18‑8)

Manufactured from A2 (18‑8) stainless steel, this M4 DIN 6798A Type A external tooth serrated lock washer is designed to resist loosening caused by vibration and movement. The external serrated teeth bite into the fastener head and mating surface to provide strong locking action and improved electrical contact. Excellent corrosion resistance makes it ideal for precision, electronic, industrial, and general‑purpose metric applications requiring secure fastening and long‑term durability.