Nut, M5 is an OEM-compatible replacement component used with Cryovac equipment. It is identified by Cryovac part number M5CNFHS and Packers Supply number COV-9907.
Castle Nut is an OEM-compatible replacement component used with Mepsco Maserator equipment. It is identified by Mepsco Maserator part number MA1241 and Packers Supply number MSM-0001.