Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WBA504-247 found under Insulator Strip Fie by Ambac International Corporation. The National Stock Number assigned to this part is 5970004964267, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like WBA504-247.