Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 290-407SS found under Screw Cap Socket Head by Honeywell International Inc. The National Stock Number assigned to this part is 5305000902142, 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 290-407SS.