Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL161774 NO 30B found under Washer Flat by Sun Star Electric Inc. The National Stock Number assigned to this part is 5310015002753, 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 PL161774 NO 30B.