This is a 1/10 scale accurate model of a WWII style gas can commonly known as a "Jerrycan." This gas can mounts laying flat with an M3 screw and can be used as a body attachment nut or SORRCA Scale accessory.  The part uses an M3 t-nut so the threads will not wear out. The insert can be purchased here: https://www.amazon.com/100pcs-T-Nuts-Nickel-Plated-Carbon/dp/B08ZNGBVH5/?th=1. Dimensions for the insert can be found in the attached images. The M3 screw used to mount the Jerrycan should protrude between 5 and 12mm from the surface you are mounting it to.