Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7 311930040 36 found under Foam Insulation Bal by Mcdonnell Douglas Helicopter. The National Stock Number assigned to this part is 1680014721578, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7 311930040 36.