Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NL16SPSS-254 found under Washer Lock by Nord Lock Inc. The National Stock Number assigned to this part is 5310016163698, 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 NL16SPSS-254.