Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W1FW22-11 found under Guard Switch by Williams Pyro Inc. The National Stock Number assigned to this part is 5930009343168, 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 W1FW22-11.