Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XT-1-324-78-00 found under by Ludell Mfg Co. The National Stock Number assigned to this part is 3510010768615, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XT-1-324-78-00.