Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FSW100SS4-8090 found under Welding Machine Arc by Sciaky Inc. The National Stock Number assigned to this part is 3431000816817, and the Federal Supply Class is 3431 Electric Arc Welding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FSW100SS4-8090.