Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL161774 NO 51 found under Bolt Eye by Sun Star Electric Inc. The National Stock Number assigned to this part is 5306014819847, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PL161774 NO 51.