Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M36811-443A found under Vent Orifice by Bath Iron Works Corporation. The National Stock Number assigned to this part is 4620003903640, and the Federal Supply Class is 4620 Water Distillation Equipment Marine And Industrial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M36811-443A.