Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FORTIN GRADE A-40 found under Insulation Sheet Electrical by Fortin Laminating Corp. The National Stock Number assigned to this part is 5970009124770, 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 FORTIN GRADE A-40.