Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9 1004 31 found under Spring Helical Compression by Danly Machine Corp. The National Stock Number assigned to this part is 5360008688011, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 9 1004 31.