Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SS5531-4 found under Terminal Stud by Precision Metal Products Inc. The National Stock Number assigned to this part is 5940010750979, 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 SS5531-4.