Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XB4-BW33M5 found under Switch Push by Schneider Electric Inc. The National Stock Number assigned to this part is 5930145450164, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XB4-BW33M5.