Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 45H22K1531 found under Lamp Cartridge by Dialight Corporation. The National Stock Number assigned to this part is 6240004357940, and the Federal Supply Class is 6240 Electric Lamps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 45H22K1531.