Tuerca cautiva m4 (x10) (10 ps) De Dietrich 7874313

The captive nut m4 (x10) is a pack of ten M4 captive nuts used for fastening panels and components in heating equipment. These nuts are designed to stay in place during assembly, simplifying installation and reducing the risk of losing hardware. Ideal for securing covers, panels, or brackets, they are a practical choice for boiler maintenance and repair tasks requiring reliable, reusable fasteners.