M20‑2.00 DIN 439B Hex Jam Nut – Class 04, Fine Thread, Plain Finish

These M20‑2.00 hex jam nuts are manufactured to DIN 439B specifications with a Class 04 rating and a fine thread pitch for precise fastening and vibration resistance. Made with a plain (uncoated) finish, they are ideal for low-profile locking applications where space is limited, commonly used in machinery, automotive, and industrial assemblies. Designed to be used in combination with standard hex nuts to prevent loosening under load.