Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LS300 found under Welding Machine Inverter by Thermal Dynamics Corp. The National Stock Number assigned to this part is 3431014693298, 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 LS300.