Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W28-5146 found under Switch Interlock by Raytheon Technical Services Company. The National Stock Number assigned to this part is 5930002377726, 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 W28-5146.