Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51XW2520A12 found under Screw Machine by Baldor Electric Company. The National Stock Number assigned to this part is 5305016476390, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 51XW2520A12.