Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 16019820Y found under Screw Cap Hexagon Head by Soc Internationale Des. The National Stock Number assigned to this part is 5305011184278, 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 16019820Y.