Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SHC440X1 2-SS found under Screw Cap Socket Head by L 3 Global Communications Solutions. The National Stock Number assigned to this part is 5305016538603, 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 SHC440X1 2-SS.