Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BM-0-240 found under Thermometer Self Indicating Bime by Rotaryaire Compressor Corp. The National Stock Number assigned to this part is 6685014866596, 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 BM-0-240.