I bought this kit from Amazon. The M2x3 work for the front of the chassis and the M2x8 work for the back.

QTEATAK 300Pcs Laptop Notebook Computer Replacement Screws Kit for Lenovo Toshiba Gateway Samsung HP IBM Dell Sony Acer Asus SSD Hard Disk SATA https://www.amazon.com/dp/B07LC74BC3/ref=cm_sw_r_cp_api_glc_fabc_Pna5FbX6VYZAJ?_encoding=UTF8&psc=1