Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ET313BM6-2 found under Screw Cap Socket He by Avibank Mfg Inc. The National Stock Number assigned to this part is 5305015414450, 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 ET313BM6-2.