Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 82500-5 found under Air Conditioner by Drs Environmental Systems Inc. The National Stock Number assigned to this part is 4120002950632, and the Federal Supply Class is 4120 Air Conditioning Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 82500-5.