Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KRW183B found under Tool Box Portable by Snap On Tools Corp. The National Stock Number assigned to this part is 5140016075062, and the Federal Supply Class is 5140 Tool And Hardware Boxes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KRW183B.