Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1 2 13UNC 2A X 7 8 IN LG GR 5 found under Screw Cap Hexagon H by National Aerospace Standards. The National Stock Number assigned to this part is 5305012862633, 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 1 2 13UNC 2A X 7 8 IN LG GR 5.