Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A373-318 found under Stud Welding by Seastrom Manufacturing Co Inc. The National Stock Number assigned to this part is 5307013914875, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A373-318.