Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M19-20873 PC NO 147 found under Screw Cap Hexagon Head by Parker Hannifin Ltd. The National Stock Number assigned to this part is 5305005434372, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M19-20873 PC NO 147.