Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL161774 NO 1A found under Ring Retaining by Sun Star Electric Inc. The National Stock Number assigned to this part is 5325015004848, 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 PL161774 NO 1A.