Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST-125-4ET found under Terminal Stud by Penn Engineering And Manufacturing. The National Stock Number assigned to this part is 5940009303068, and the Federal Supply Class is 5940 Lugs Terminals And Terminal Strips. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ST-125-4ET.