Q. Can this be super-glued to an aluminium surface?
A. Hi Neil. Thank you for your question. I would not use super glue, instead I would use self adhesive foam pads or an impact adhesive. Super glue is very brittle so it wouldn't stay stuck for long. Changing batteries would be enough to make the battery holder come loose from the aluminium surface.
Q. Do you sell the little plastic screws, or some other device that can be used to attach this part to a pcb via its drill holes?
Where will I be able to find this?
A. Hi Diogo. Thank you for your question. The holes are shown as 3.3mm diameter so the M3 nylon screws washers and nuts should fit.