Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 890 31 04 found under Screw Cap Socket He by Greaves Farymann Diesel Gmbh. The National Stock Number assigned to this part is 5305123518763, 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 890 31 04.