Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17ST4 found under Wire Nonelectrical by Tw Metals Inc. The National Stock Number assigned to this part is 9525009735703, and the Federal Supply Class is 9525 Wire Nonelectrical Nonferrous Base Metal. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 17ST4.