Śruba Parker 4.2x 19 (20 ps) De Dietrich S100049

The Parker screw 4.2x19 is a precision fastener commonly used in burner and boiler assemblies. Its specific dimensions ensure a secure fit for mounting components such as covers, brackets, or control units. When sourcing boiler spare parts, using the correct screw type is vital to avoid stripping threads or causing misalignment. This screw is designed to withstand the thermal and mechanical stresses of heating equipment, making it a reliable choice for repairs and replacements.