Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5S7-11 found under Stud Turnlock Fastener by Cooper Industries Inc. The National Stock Number assigned to this part is 5325008811339, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5S7-11.