Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4UV44 found under Spoolgun Welding by Grainger W W Inc. The National Stock Number assigned to this part is 3431014775343, 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 4UV44.