Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 41-0508 found under Washer Flat by Sargent Welch Scientific Co. The National Stock Number assigned to this part is 5310010210897, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 41-0508.