Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EN1665-M20X1.5X100-10.9A3D found under Screw Cap Hexagon H by International Organization. The National Stock Number assigned to this part is 5305015749120, 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 EN1665-M20X1.5X100-10.9A3D.