Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74A450933-1003 found under Support Assembly Switch Sensor by Apex Supply Co. The National Stock Number assigned to this part is 1620011076840, and the Federal Supply Class is 1620 Aircraft Landing Gear Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 74A450933-1003.