Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2005M4X16 found under Screw Cap Socket Head by European Industrial Services Ltd. The National Stock Number assigned to this part is 5305991396619, 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 2005M4X16.