Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 305-637233 found under Seat Assembly Cable Seal by Smith And Smith Aircraft Co. The National Stock Number assigned to this part is 1560000816972, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 305-637233.