The invention relates to fastening means (340) for an upper closure of a plastic crate (100) for containing and transporting fruit and vegetable produce, which means allow quick and easy connection and release, the fastening means (340) consisting of: a female end (341') having a central opening (343) with guide elements (344) and retaining elements (345); and a male end (347) having a head (346) designed to be inserted into the opening (343) of the female end.