Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4054STM2 found under Band Heater Mounting by Airserco Mfg Co Inc. The National Stock Number assigned to this part is 4935011471781, 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 4054STM2.