Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 566-3-2961 found under Stud Welding by Usacecom Intelligence Electronic. The National Stock Number assigned to this part is 5307001635115, 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 566-3-2961.