Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6K.HALSKR M5 X 40-8.8 found under Screw Cap Hexagon Head by Kamewa Usa Inc. The National Stock Number assigned to this part is 5305012607705, 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 6K.HALSKR M5 X 40-8.8.