Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 901-031-372-211 found under Plate Doorswitch by Bell Boeing Joint Project Office. The National Stock Number assigned to this part is 5340015906271, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 901-031-372-211.