Also known as 'Chicago Screws'. Cap head diameter - 11mm, post length 6mm (1/4") Two part post and threaded screw.
Sold in Packs of 10.

Use a 5mm diameter drive/hole punch - 3777-07.

Threaded screw with recessed open cap, ideal for fixing together layers of leather for cases, straps, axes sheaths, sample cards and more. The screw fixing allows for the screws to be removed and re-attached, for a more permanent fixing add a drop of superglue to the thread. In a choice of post lengths to fasten layers of leather/leather thickness.