Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M4ES616-16P found under Screw Cap Hexagon Head by Long Lok Fasteners Corporation. The National Stock Number assigned to this part is 5305001726356, 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 M4ES616-16P.