Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS400 found under Multisaw Attachment Rotary Tool by Dremel Mfg Co. The National Stock Number assigned to this part is 5130015964257, and the Federal Supply Class is 5130 Hand Tools Power Driven. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MS400.