Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number USGS 24K40955 found under Topo Mc And G Products by National Geospatial Intelligence Agency. The National Stock Number assigned to this part is 7643016380560, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like USGS 24K40955.