Fastening device

A fastening device for fastening at least two panels or flanges to each other, the fastening device comprising:

• a male member which includes a base and a projection, the projection being shaped and dimensioned to be inserted into and at least partially through aligned slots in the at least two panels or flanges, and the base being configured to limit the movement of the projection through the slots, wherein the male member further includes or houses a first securing component;
• a female member which defines an opening, the opening being shaped and dimensioned generally complementally to the projection of the male member, wherein the male member and the female member are configured to receive the at least two panels or flanges between them when the projection is received in the opening, in use;
• a washer which is configured to mate with the female member, wherein the washer is shaped and dimensioned such that in use, when mating with the female member, displacement of the washer relative to the female member towards the male member is substantially prevented;
• and
• a second securing component which is configured to mate with the first securing component and to secure the washer in abutment with the female member and in abutment with the projection of the male member, thereby clamping the at least two panels or flanges between the female member and the male member.