Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 45 0253 27 found under Lamp Assembly by Grimes Aerospace Company. The National Stock Number assigned to this part is 6240014918834, 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 45 0253 27.