Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 23773FMK-82 found under Diaphragm Inspecti by Mcdermott Inc. The National Stock Number assigned to this part is 4470008312196, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 23773FMK-82.