Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 99WLBA40 found under Washer Key by Coltec Industries Inc. The National Stock Number assigned to this part is 5310001860967, 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 99WLBA40.