De Dietrich 94952101 nut G1"

This part is a nut with a G1" thread. In a boiler or burner system, nuts of this type are used to secure or connect components that have a corresponding male G1" thread. Common applications include fastening a gas valve, a gas pressure switch, a water pressure switch, or a sensor to a threaded port or mounting stud. The G designation indicates a BSPP (British Standard Pipe Parallel) thread, which seals on the thread itself or with a sealing washer, depending on the specific fitting. When selecting a replacement nut for such an application, the critical parameter is the thread size – here G1" – and the thread form (parallel). The nut must match the thread of the stud or fitting it engages. The material of the nut (brass, steel, etc.) should be appropriate for the working pressure and the medium (water, gas, oil). For gas-carrying connections, a suitable thread sealant or sealing washer is typically required. Always check that the nut is not damaged and that it provides a secure fastening without over-tightening, especially on sensors or pressure switches with plastic housings.