M36‑4.00 DIN 439B Hex Jam Nut – Class 04, Coarse Thread, Plain Finish

The M36‑4.00 DIN 439B hex jam nut is a robust, low‑profile locking nut designed for large‑diameter, coarse‑thread metric applications where reliable locking and reduced nut height are required. Manufactured to DIN 439B specifications with a Class 04 strength rating, this jam nut is intended for use with a standard hex nut to prevent loosening caused by vibration or operational loads. The 4.00 mm coarse thread pitch enables fast installation and dependable performance in heavy industrial and mechanical assemblies. Supplied with a plain (uncoated) steel finish, it is suitable for controlled environments and secondary locking applications.