Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK6000-63W found under Washer Slotted by Yale Industrial Products Inc. The National Stock Number assigned to this part is 5310015329109, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK6000-63W.