Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S9400-921738 found under Stage Decompression Divers by Desco Corp. The National Stock Number assigned to this part is 4220002333612, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S9400-921738.