Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MX-00120-28 found under Screw Machine by Small Parts Inc. The National Stock Number assigned to this part is 5305011873451, 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 MX-00120-28.