Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4S10-1 found under Clinch Plate Snap Fastener by Alcoa Fastening Systems Ltd. The National Stock Number assigned to this part is 5325007533657, 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 4S10-1.