Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5 8 11NC2X6 1 2HEXSTL found under Screw Cap Hexagon H by Allmetal Screw Products Corp. The National Stock Number assigned to this part is 5305010579325, 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 5 8 11NC2X6 1 2HEXSTL.