Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XB2-BT42H50 found under Push Button by Telemecanique Inc. The National Stock Number assigned to this part is 5930014334474, 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 XB2-BT42H50.