This is a two in one posting. the nut has a large washer built in to help keep the spool on, the thread size for s and g's is a 30 x 1.5 mm. The sd case is for a micro sd to sd extension cable from amazon which I will link. you must be willing to cut a 40mm x 16mm rectangle in your lcd frame which is no problem with a Dremel and small cut off wheel. If you have any questions please ask me. https://www.amazon.com/gp/product/B06X3Y4BBB/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1