Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PME-SS-4(103 found under Switch Safety Anten by Precision Marine Electronics Inc. The National Stock Number assigned to this part is 5930013915093, 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 PME-SS-4(103.