Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12M-14 found under Setscrew by Metrex Valve Corp. The National Stock Number assigned to this part is 5305014707722, 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 12M-14.