Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M70(R813-16E found under Setscrew by Nd Industries Inc. The National Stock Number assigned to this part is 5305010553769, 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 M70(R813-16E.