Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL4603 ITEM 3 found under Retainer Turnlock Fastener Eject by Admiral Valve Llc. The National Stock Number assigned to this part is 5325015030976, 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 PL4603 ITEM 3.