Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S04-111121-11 found under Generator Gas Pressure Propellan by Transtechnology Corp. The National Stock Number assigned to this part is 1377004389693, 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 S04-111121-11.